title: How to perform mathematical functions like addition or subtraction on values received from OData?
body: <p>my odata is returning me this values from CDS view:</p>
  
  <p><strong>investmentDone = 18 AND
  totalRevenue = 10</strong></p>
  
  <p>I want to calculate profit from these values and store it in variable <strong><em>(profit = investmentDone - totalRevenue)</em></strong>, so that I can use it in my view to display that value. Any help how can I perform this calculations in controller? </p>
  
  <p>Tx in advance!  </p>