Print multiplier in scientific notation

app/helpers/application_helper.rb

@@ -99,4 +99,26 @@ module ApplicationHelper
 
     send "#{type}_to", name, options, html_options
   end
+
+  # Converts value to HTML formatted scientific notation
+  def scientifize(d)
+    sign, coefficient, base, exponent = d.split
+    return 'NaN' unless sign
+
+    result = (sign == -1 ? '-' : '')
+    unless coefficient == '1' && sign == 1
+      if coefficient.length > 1
+        result += coefficient.insert(1, '.')
+      elsif
+        result += coefficient
+      end
+      if exponent != 1
+        result += "×"
+      end
+    end
+    if exponent != 1
+      result += "10<sup>#{exponent-1}</sup>"
+    end
+    result.html_safe
+  end
 end

app/views/units/index.html.erb

@@ -22,7 +22,7 @@
           <%= link_to unit.symbol, edit_unit_path(unit) %>
         </td>
         <td><%= unit.name %></td>
-        <td class="number"><%= unit.multiplier.to_s('3F') unless unit.multiplier == 1 %></td>
+        <td class="number"><%= scientifize(unit.multiplier) unless unit.multiplier == 1 %></td>
         <% if current_user.at_least(:active) %>
           <td class="actions">
             <%= image_button_to t(".delete_unit"), "delete-outline", unit_path(unit),