I was a bit rushed this morning at work, and missed your
question. Not unlike now, when I want to go to bed!

To find out what the 2 and 20 does, you have to set  up the formulas in
Excel, and play with them. Based on my earlier post, you will need to do
that anyway.

Excel Help covers the RIGHT function in detail, both in the workbook
environment, and in the VBE.

Which is my long way of saying - I don't have a clue how RIGHT works,
but I know where to find help - which in Excel, is perhaps more
important!