I am pulling out information from a cell using =RIGHT(C2,4). It gives me 6-2 in the cell, which is what I want. Now I want to sum the cell but can't figure out how to do it. I have tried converting it but it doesn't work, I tried pulling out each digit, but that didn't work. I am sure this is simple for all of you, but any help would be appreciated.

Ideally, I would like a formula that could convert cell A1 into a result in one cell.

Thanks for the help,
Steveconverting text example.xlsx