How would I use the keystroke of a letter represent a colunm of say ones,tens or hundreds.
In other words if I use' a' to represent the hundreds spot 's' to represent the tens spot and 'f' to represent the one
and if I typed in a 1 s 2 and f 9 this would appear on the screen as 129. And if I then type 'a 1', 's 1 and 'f' 0
the sum of the two would come out correctly.