Well, I put together what I was trying to do, with the =mod formula. It seems to do what I want, except that when a cell comes up as "37", it adds the "6" as I want, but returns a "0" in the next cell, instead of returning a "43". Any idea's on how to stop this? If one cell is a "38", it counts the "6" and returns the "1" as needed.

Thanks!