title: How to apply Calculation In Interactive Grid Between 2 Columns
body: <p>I want to apply Calculation on two Columns in Interactive Grid that calculated value want to store in third non database column 
  In the Below Image I want apply calculation on "QTY" and "Rate" and the Value store in Amount that is Non-Database..</p>
  
  <p><a href="https://i.stack.imgur.com/HVygn.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HVygn.jpg" alt="Click To View Image"></a></p>