title: Excel Report - Excel Formulas
body: <p>I am trying to formulate my data on a report in order to return the sum of items from column C based on the same item on column A and column B. For example:</p>
  
  <p><a href="http://i.stack.imgur.com/FadW7.png" rel="nofollow">http://i.stack.imgur.com/FadW7.png</a> (I can't post the image because I don't have 10 reputation yet T.T)</p>
  
  <p>On the above image, User "A" has used a Sum of data for "z1". I need to automatically grab a list of users per zones and sum the data for that user and that zone. </p>
  
  <p>I have elementary experience with Excel (I can add formulas but I do not know what formula to write), any help would be greatly appreciated.</p>
  
  <p>Regards,</p>