Multiple terms in same cell?

Hello,

I am wondering if it is possible to enter two or more summable terms in the same cell. For example, if I entered "3A + 2B" in a cell, I would like Excel to be able to sum these two terms as "5", but still be able to retrieve information about how many "A"s and "B"s there are in the cell. Does anyone know of a way to do this? Glad to clarify if needed.

Matthew