title: Expression.Error: We cannot apply operator & to types Number and Number
body: <p>I don't understand the root of this Type issue. I have added a custom column to combine two numbers. They are both Type123. I am unsure why the error pops up.</p>
  <p><a href="https://i.stack.imgur.com/emIL3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/emIL3.png" alt="Number Data" /></a></p>
  <p><a href="https://i.stack.imgur.com/CYsDM.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/CYsDM.png" alt="Custom Colum" /></a></p>
  <p><a href="https://i.stack.imgur.com/W49AR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/W49AR.png" alt="enter image description here" /></a></p>