title: Convert UTM to decimal degrees with Esri's ArcGis with C#
body: <p>I need to convert a user's UTM input (WGS 1984) into Decimal Degrees, preferably using ESRI's ArcGis.  I've already got the code to retrieve the zone (formatted like 14N, 22S, etc.) and the easting and northing factors.  What do I do from here?</p>
  
  <p>Edit: we expect the input as a string like: <code>14N 423113mE 4192417mN</code>.  I can easily extract the numbers (and a character) <code>14</code>, <code>N</code>, <code>423113</code>, and <code>4192417</code> from the string above.  I just need to somehow translate that to Decimal Degrees.</p>