title: multiplication and division with decimals
body: <p>I´m new to C# and have now a Problem with mathematical stuff. Why can´t I mulitplicate or divide "simple" like this:</p>
  
  <pre><code> decimal mLon1 = 0;
   decimal mLat1 = 0;
   decimal mFactor = 111021;
   decimal mRadius = 100;
   decimal mLat = 12.123;
  
   mLon1 = mLon - mRadius / Math.Abs(Math.Cos(((Math.PI / 180) * mLat)) * mFaktor);
   mLat1 = mLat - (mRadius / mFaktor);
  </code></pre>
  
  <p>Compiler Shows an error:</p>
  
  <blockquote>
    <p><em>The Operator '*' can not be applied to operands of type 'double' and 'decimal'.</em></p>
  </blockquote>
  
  <p>Same with Operator '/' ...</p>
  
  <p>How can I get my code workin?
  Thx for any hint.</p>