title: jQuery divide a variable
body: <p>Why won't this work?  Tearing my hear out... <br><br>This fiddle has been updated with the approved answer
  <a href="http://jsfiddle.net/jbreezy/pswdn2wb/" rel="nofollow">http://jsfiddle.net/jbreezy/pswdn2wb/</a> <br><br>
  <code>$(document).ready(function() {
      var marginFix = $('.marginFix').css('font-size');
      var onethirdMargin = parseInt(marginFix / 3);
      $('.marginFix').css({"margin-top":marginFix});
      $('.marginFix').css({"margin-bottom":onethirdMargin});
  });</code>
  <br><br>As you can see there, I just want the variable 'onethirdMargin' to be 1/3 of the other variable.  <br><br>So essentially no matter what you ever set the font-size to in the css, that elements margin-top will equal to said font-size, and the margin-bottom will be 1/3 of that automatically (If you apply the class marginFix to it).  Currently the margin-bottom is still just staying equal as well...  Any help is super appreciated!</p>