I have an inventory sheet, where I need to calculate the difference between the actual value and the series of expected values. Here is a snapshot of what I am talking about:
So for Item1:
Current: 50
Expected: 45,45,45
Now I want to devise a formula that will calculate a difference until the last column in this specific row, something like this:
difference = 50-(45,45,45) //50-45+50-45+50-45 and so on (Q,R..)
difference = 15 //final result
Is there any way that we can achieve this by putting formula in a cell, any help would be much appreciated, thank you.

