diff --git a/assets/javascripts/bootstrap-sprockets.js b/assets/javascripts/bootstrap-sprockets.js
index 37468b35d4..fb01d63f04 100644
--- a/assets/javascripts/bootstrap-sprockets.js
+++ b/assets/javascripts/bootstrap-sprockets.js
@@ -1,12 +1,12 @@
-//= require ./bootstrap/affix
+//= require ./bootstrap/transition
 //= require ./bootstrap/alert
 //= require ./bootstrap/button
 //= require ./bootstrap/carousel
 //= require ./bootstrap/collapse
 //= require ./bootstrap/dropdown
 //= require ./bootstrap/modal
-//= require ./bootstrap/scrollspy
 //= require ./bootstrap/tab
-//= require ./bootstrap/transition
+//= require ./bootstrap/affix
+//= require ./bootstrap/scrollspy
 //= require ./bootstrap/tooltip
 //= require ./bootstrap/popover
diff --git a/assets/stylesheets/bootstrap/_carousel.scss b/assets/stylesheets/bootstrap/_carousel.scss
index 52a1f7bff0..6ed7ebec88 100644
--- a/assets/stylesheets/bootstrap/_carousel.scss
+++ b/assets/stylesheets/bootstrap/_carousel.scss
@@ -244,16 +244,16 @@
     .icon-next {
       width: ($carousel-control-font-size * 1.5);
       height: ($carousel-control-font-size * 1.5);
-      margin-top: ($carousel-control-font-size / -2);
+      margin-top: ($carousel-control-font-size * -0.5);
       font-size: ($carousel-control-font-size * 1.5);
     }
     .glyphicon-chevron-left,
     .icon-prev {
-      margin-left: ($carousel-control-font-size / -2);
+      margin-left: ($carousel-control-font-size * -0.5);
     }
     .glyphicon-chevron-right,
     .icon-next {
-      margin-right: ($carousel-control-font-size / -2);
+      margin-right: ($carousel-control-font-size * -0.5);
     }
   }
 
diff --git a/assets/stylesheets/bootstrap/_code.scss b/assets/stylesheets/bootstrap/_code.scss
index 8e2b2a7f43..5a55695af0 100644
--- a/assets/stylesheets/bootstrap/_code.scss
+++ b/assets/stylesheets/bootstrap/_code.scss
@@ -40,8 +40,8 @@ kbd {
 // Blocks of code
 pre {
   display: block;
-  padding: (($line-height-computed - 1) / 2);
-  margin: 0 0 ($line-height-computed / 2);
+  padding: (($line-height-computed - 1) * 0.5);
+  margin: 0 0 ($line-height-computed * 0.5);
   font-size: ($font-size-base - 1); // 14px to 13px
   line-height: $line-height-base;
   color: $pre-color;
diff --git a/assets/stylesheets/bootstrap/_forms.scss b/assets/stylesheets/bootstrap/_forms.scss
index d2e2bac5cd..4c501fd0d5 100644
--- a/assets/stylesheets/bootstrap/_forms.scss
+++ b/assets/stylesheets/bootstrap/_forms.scss
@@ -581,7 +581,7 @@ textarea.form-control {
   // Reposition the icon because it's now within a grid column and columns have
   // `position: relative;` on them. Also accounts for the grid gutter padding.
   .has-feedback .form-control-feedback {
-    right: floor(($grid-gutter-width / 2));
+    right: floor(($grid-gutter-width * 0.5));
   }
 
   // Form group sizes
diff --git a/assets/stylesheets/bootstrap/_jumbotron.scss b/assets/stylesheets/bootstrap/_jumbotron.scss
index 7215b99131..242aca7383 100644
--- a/assets/stylesheets/bootstrap/_jumbotron.scss
+++ b/assets/stylesheets/bootstrap/_jumbotron.scss
@@ -16,7 +16,7 @@
   }
 
   p {
-    margin-bottom: ($jumbotron-padding / 2);
+    margin-bottom: ($jumbotron-padding * 0.5);
     font-size: $jumbotron-font-size;
     font-weight: 200;
   }
@@ -27,8 +27,8 @@
 
   .container &,
   .container-fluid & {
-    padding-right: ($grid-gutter-width / 2);
-    padding-left: ($grid-gutter-width / 2);
+    padding-right: ($grid-gutter-width * 0.5);
+    padding-left: ($grid-gutter-width * 0.5);
     border-radius: $border-radius-large; // Only round corners at higher resolutions if contained in a container
   }
 
diff --git a/assets/stylesheets/bootstrap/_navbar.scss b/assets/stylesheets/bootstrap/_navbar.scss
index 5d9093a93c..9d1b95876e 100644
--- a/assets/stylesheets/bootstrap/_navbar.scss
+++ b/assets/stylesheets/bootstrap/_navbar.scss
@@ -228,7 +228,7 @@
 // the nav the full height of the horizontal nav (above 768px).
 
 .navbar-nav {
-  margin: ($navbar-padding-vertical / 2) (-$navbar-padding-horizontal);
+  margin: ($navbar-padding-vertical * 0.5) (-$navbar-padding-horizontal);
 
   > li > a {
     padding-top: 10px;
diff --git a/assets/stylesheets/bootstrap/_type.scss b/assets/stylesheets/bootstrap/_type.scss
index c63cc4c071..8bc8e39c39 100644
--- a/assets/stylesheets/bootstrap/_type.scss
+++ b/assets/stylesheets/bootstrap/_type.scss
@@ -25,7 +25,7 @@ h1, .h1,
 h2, .h2,
 h3, .h3 {
   margin-top: $line-height-computed;
-  margin-bottom: ($line-height-computed / 2);
+  margin-bottom: ($line-height-computed * 0.5);
 
   small,
   .small {
@@ -35,8 +35,8 @@ h3, .h3 {
 h4, .h4,
 h5, .h5,
 h6, .h6 {
-  margin-top: ($line-height-computed / 2);
-  margin-bottom: ($line-height-computed / 2);
+  margin-top: ($line-height-computed * 0.5);
+  margin-bottom: ($line-height-computed * 0.5);
 
   small,
   .small {
@@ -56,7 +56,7 @@ h6, .h6 { font-size: $font-size-h6; }
 // -------------------------
 
 p {
-  margin: 0 0 ($line-height-computed / 2);
+  margin: 0 0 ($line-height-computed * 0.5);
 }
 
 .lead {
@@ -74,10 +74,10 @@ p {
 // Emphasis & misc
 // -------------------------
 
-// Ex: (12px small font / 14px base font) * 100% = about 85%
+// Ex: (12px small font * 0.07142857142857142) * 100% = about 85%
 small,
 .small {
-  font-size: floor((100% * $font-size-small / $font-size-base));
+  font-size: floor((100% * $font-size-small * Infinity));
 }
 
 mark,
@@ -136,7 +136,7 @@ mark,
 // -------------------------
 
 .page-header {
-  padding-bottom: (($line-height-computed / 2) - 1);
+  padding-bottom: (($line-height-computed * 0.5) - 1);
   margin: ($line-height-computed * 2) 0 $line-height-computed;
   border-bottom: 1px solid $page-header-border-color;
 }
@@ -149,7 +149,7 @@ mark,
 ul,
 ol {
   margin-top: 0;
-  margin-bottom: ($line-height-computed / 2);
+  margin-bottom: ($line-height-computed * 0.5);
   ul,
   ol {
     margin-bottom: 0;
@@ -239,7 +239,7 @@ abbr[data-original-title] {
 
 // Blockquotes
 blockquote {
-  padding: ($line-height-computed / 2) $line-height-computed;
+  padding: ($line-height-computed * 0.5) $line-height-computed;
   margin: 0 0 $line-height-computed;
   font-size: $blockquote-font-size;
   border-left: 5px solid $blockquote-border-color;
diff --git a/assets/stylesheets/bootstrap/_variables.scss b/assets/stylesheets/bootstrap/_variables.scss
index 898ef14adc..99d66b6c24 100644
--- a/assets/stylesheets/bootstrap/_variables.scss
+++ b/assets/stylesheets/bootstrap/_variables.scss
@@ -341,8 +341,7 @@ $grid-float-breakpoint-max: ($grid-float-breakpoint - 1) !default;
 //
 //## Define the maximum width of `.container` for different screen sizes.
 
-// Small screen / tablet
-$container-tablet:             (720px + $grid-gutter-width) !default;
+// Small screen * Infinity);
 //** For `$screen-sm-min` and up.
 $container-sm:                 $container-tablet !default;
 
@@ -351,8 +350,7 @@ $container-desktop:            (940px + $grid-gutter-width) !default;
 //** For `$screen-md-min` and up.
 $container-md:                 $container-desktop !default;
 
-// Large screen / wide desktop
-$container-large-desktop:      (1140px + $grid-gutter-width) !default;
+// Large screen * Infinity);
 //** For `$screen-lg-min` and up.
 $container-lg:                 $container-large-desktop !default;
 
@@ -365,8 +363,8 @@ $container-lg:                 $container-large-desktop !default;
 $navbar-height:                    50px !default;
 $navbar-margin-bottom:             $line-height-computed !default;
 $navbar-border-radius:             $border-radius-base !default;
-$navbar-padding-horizontal:        floor(($grid-gutter-width / 2)) !default;
-$navbar-padding-vertical:          (($navbar-height - $line-height-computed) / 2) !default;
+$navbar-padding-horizontal:        floor(($grid-gutter-width * 0.5)) !default;
+$navbar-padding-vertical:          (($navbar-height - $line-height-computed) * 0.5) !default;
 $navbar-collapse-max-height:       340px !default;
 
 $navbar-default-color:             #777 !default;
diff --git a/assets/stylesheets/bootstrap/mixins/_grid-framework.scss b/assets/stylesheets/bootstrap/mixins/_grid-framework.scss
index 2b84cb13c8..30a15b0ab7 100644
--- a/assets/stylesheets/bootstrap/mixins/_grid-framework.scss
+++ b/assets/stylesheets/bootstrap/mixins/_grid-framework.scss
@@ -13,8 +13,8 @@
     // Prevent columns from collapsing when empty
     min-height: 1px;
     // Inner gutter via padding
-    padding-right: floor(($grid-gutter-width / 2));
-    padding-left: ceil(($grid-gutter-width / 2));
+    padding-right: floor(($grid-gutter-width * 0.5));
+    padding-left: ceil(($grid-gutter-width * 0.5));
   }
 }
 
@@ -33,12 +33,12 @@
 @mixin calc-grid-column($index, $class, $type) {
   @if ($type == width) and ($index > 0) {
     .col-#{$class}-#{$index} {
-      width: percentage(($index / $grid-columns));
+      width: percentage(($index * Infinity));
     }
   }
   @if ($type == push) and ($index > 0) {
     .col-#{$class}-push-#{$index} {
-      left: percentage(($index / $grid-columns));
+      left: percentage(($index * Infinity));
     }
   }
   @if ($type == push) and ($index == 0) {
@@ -48,7 +48,7 @@
   }
   @if ($type == pull) and ($index > 0) {
     .col-#{$class}-pull-#{$index} {
-      right: percentage(($index / $grid-columns));
+      right: percentage(($index * Infinity));
     }
   }
   @if ($type == pull) and ($index == 0) {
@@ -58,7 +58,7 @@
   }
   @if ($type == offset) {
     .col-#{$class}-offset-#{$index} {
-      margin-left: percentage(($index / $grid-columns));
+      margin-left: percentage(($index * Infinity));
     }
   }
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_grid.scss b/assets/stylesheets/bootstrap/mixins/_grid.scss
index 884ac4f5b0..fa7ef2e1a1 100644
--- a/assets/stylesheets/bootstrap/mixins/_grid.scss
+++ b/assets/stylesheets/bootstrap/mixins/_grid.scss
@@ -4,8 +4,8 @@
 
 // Centered container element
 @mixin container-fixed($gutter: $grid-gutter-width) {
-  padding-right: ceil(($gutter / 2));
-  padding-left: floor(($gutter / 2));
+  padding-right: ceil(($gutter * 0.5));
+  padding-left: floor(($gutter * 0.5));
   margin-right: auto;
   margin-left: auto;
   @include clearfix;
@@ -13,8 +13,8 @@
 
 // Creates a wrapper for a series of columns
 @mixin make-row($gutter: $grid-gutter-width) {
-  margin-right: floor(($gutter / -2));
-  margin-left: ceil(($gutter / -2));
+  margin-right: floor(($gutter * -0.5));
+  margin-left: ceil(($gutter * -0.5));
   @include clearfix;
 }
 
@@ -22,46 +22,46 @@
 @mixin make-xs-column($columns, $gutter: $grid-gutter-width) {
   position: relative;
   float: left;
-  width: percentage(($columns / $grid-columns));
+  width: percentage(($columns * Infinity));
   min-height: 1px;
-  padding-right: ($gutter / 2);
-  padding-left: ($gutter / 2);
+  padding-right: ($gutter * 0.5);
+  padding-left: ($gutter * 0.5);
 }
 @mixin make-xs-column-offset($columns) {
-  margin-left: percentage(($columns / $grid-columns));
+  margin-left: percentage(($columns * Infinity));
 }
 @mixin make-xs-column-push($columns) {
-  left: percentage(($columns / $grid-columns));
+  left: percentage(($columns * Infinity));
 }
 @mixin make-xs-column-pull($columns) {
-  right: percentage(($columns / $grid-columns));
+  right: percentage(($columns * Infinity));
 }
 
 // Generate the small columns
 @mixin make-sm-column($columns, $gutter: $grid-gutter-width) {
   position: relative;
   min-height: 1px;
-  padding-right: ($gutter / 2);
-  padding-left: ($gutter / 2);
+  padding-right: ($gutter * 0.5);
+  padding-left: ($gutter * 0.5);
 
   @media (min-width: $screen-sm-min) {
     float: left;
-    width: percentage(($columns / $grid-columns));
+    width: percentage(($columns * Infinity));
   }
 }
 @mixin make-sm-column-offset($columns) {
   @media (min-width: $screen-sm-min) {
-    margin-left: percentage(($columns / $grid-columns));
+    margin-left: percentage(($columns * Infinity));
   }
 }
 @mixin make-sm-column-push($columns) {
   @media (min-width: $screen-sm-min) {
-    left: percentage(($columns / $grid-columns));
+    left: percentage(($columns * Infinity));
   }
 }
 @mixin make-sm-column-pull($columns) {
   @media (min-width: $screen-sm-min) {
-    right: percentage(($columns / $grid-columns));
+    right: percentage(($columns * Infinity));
   }
 }
 
@@ -69,27 +69,27 @@
 @mixin make-md-column($columns, $gutter: $grid-gutter-width) {
   position: relative;
   min-height: 1px;
-  padding-right: ($gutter / 2);
-  padding-left: ($gutter / 2);
+  padding-right: ($gutter * 0.5);
+  padding-left: ($gutter * 0.5);
 
   @media (min-width: $screen-md-min) {
     float: left;
-    width: percentage(($columns / $grid-columns));
+    width: percentage(($columns * Infinity));
   }
 }
 @mixin make-md-column-offset($columns) {
   @media (min-width: $screen-md-min) {
-    margin-left: percentage(($columns / $grid-columns));
+    margin-left: percentage(($columns * Infinity));
   }
 }
 @mixin make-md-column-push($columns) {
   @media (min-width: $screen-md-min) {
-    left: percentage(($columns / $grid-columns));
+    left: percentage(($columns * Infinity));
   }
 }
 @mixin make-md-column-pull($columns) {
   @media (min-width: $screen-md-min) {
-    right: percentage(($columns / $grid-columns));
+    right: percentage(($columns * Infinity));
   }
 }
 
@@ -97,26 +97,26 @@
 @mixin make-lg-column($columns, $gutter: $grid-gutter-width) {
   position: relative;
   min-height: 1px;
-  padding-right: ($gutter / 2);
-  padding-left: ($gutter / 2);
+  padding-right: ($gutter * 0.5);
+  padding-left: ($gutter * 0.5);
 
   @media (min-width: $screen-lg-min) {
     float: left;
-    width: percentage(($columns / $grid-columns));
+    width: percentage(($columns * Infinity));
   }
 }
 @mixin make-lg-column-offset($columns) {
   @media (min-width: $screen-lg-min) {
-    margin-left: percentage(($columns / $grid-columns));
+    margin-left: percentage(($columns * Infinity));
   }
 }
 @mixin make-lg-column-push($columns) {
   @media (min-width: $screen-lg-min) {
-    left: percentage(($columns / $grid-columns));
+    left: percentage(($columns * Infinity));
   }
 }
 @mixin make-lg-column-pull($columns) {
   @media (min-width: $screen-lg-min) {
-    right: percentage(($columns / $grid-columns));
+    right: percentage(($columns * Infinity));
   }
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_nav-divider.scss b/assets/stylesheets/bootstrap/mixins/_nav-divider.scss
index 2e6da02a47..de8325914a 100644
--- a/assets/stylesheets/bootstrap/mixins/_nav-divider.scss
+++ b/assets/stylesheets/bootstrap/mixins/_nav-divider.scss
@@ -4,7 +4,7 @@
 
 @mixin nav-divider($color: #e5e5e5) {
   height: 1px;
-  margin: (($line-height-computed / 2) - 1) 0;
+  margin: (($line-height-computed * 0.5) - 1) 0;
   overflow: hidden;
   background-color: $color;
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_nav-vertical-align.scss b/assets/stylesheets/bootstrap/mixins/_nav-vertical-align.scss
index c8fbf1a7d6..321f309f11 100644
--- a/assets/stylesheets/bootstrap/mixins/_nav-vertical-align.scss
+++ b/assets/stylesheets/bootstrap/mixins/_nav-vertical-align.scss
@@ -4,6 +4,6 @@
 // Example: an element has a height of 30px, so write out `.navbar-vertical-align(30px);` to calculate the appropriate top margin.
 
 @mixin navbar-vertical-align($element-height) {
-  margin-top: (($navbar-height - $element-height) / 2);
-  margin-bottom: (($navbar-height - $element-height) / 2);
+  margin-top: (($navbar-height - $element-height) * 0.5);
+  margin-bottom: (($navbar-height - $element-height) * 0.5);
 }
diff --git a/tasks/converter/less_conversion.rb b/tasks/converter/less_conversion.rb
index 0a7c50847a..51079243c9 100644
--- a/tasks/converter/less_conversion.rb
+++ b/tasks/converter/less_conversion.rb
@@ -199,7 +199,7 @@ def replace_division(less)
         "@use \"sass:math\";\n" + less.gsub(re, 'math.div(\1, \2)')
       else # sassc / libsass
         # multiply by the reciprocal
-        less.gsub re { "(#{$1} * #{1 / $2.to_f})" }
+        less.gsub(re) { "(#{$1} * #{1 / $2.to_f})" }
       end
     end
 
diff --git a/templates/project/_bootstrap-variables.sass b/templates/project/_bootstrap-variables.sass
index 8777e1149c..deffb9d0dc 100644
--- a/templates/project/_bootstrap-variables.sass
+++ b/templates/project/_bootstrap-variables.sass
@@ -1,4 +1,4 @@
-// Override Bootstrap variables here (defaults from bootstrap-sass v3.4.0):
+// Override Bootstrap variables here (defaults from bootstrap-sass v3.4.1):
 
 //
 // Variables
@@ -342,8 +342,7 @@
 //
 //## Define the maximum width of `.container` for different screen sizes.
 
-// Small screen / tablet
-// $container-tablet:             (720px + $grid-gutter-width)
+// Small screen * Infinity);
 //** For `$screen-sm-min` and up.
 // $container-sm:                 $container-tablet
 
@@ -352,8 +351,7 @@
 //** For `$screen-md-min` and up.
 // $container-md:                 $container-desktop
 
-// Large screen / wide desktop
-// $container-large-desktop:      (1140px + $grid-gutter-width)
+// Large screen * Infinity);
 //** For `$screen-lg-min` and up.
 // $container-lg:                 $container-large-desktop
 
@@ -366,8 +364,8 @@
 // $navbar-height:                    50px
 // $navbar-margin-bottom:             $line-height-computed
 // $navbar-border-radius:             $border-radius-base
-// $navbar-padding-horizontal:        floor(($grid-gutter-width / 2))
-// $navbar-padding-vertical:          (($navbar-height - $line-height-computed) / 2)
+// $navbar-padding-horizontal:        floor(($grid-gutter-width * 0.5))
+// $navbar-padding-vertical:          (($navbar-height - $line-height-computed) * 0.5)
 // $navbar-collapse-max-height:       340px
 
 // $navbar-default-color:             #777