Four identical metallic objects carry the following charges: +1.46, +6.39, -4.06, and -9.94C. The objects are brought simultaneously into contact, so that each touches the others. Then they are separated. (a) What is the final charge on each object? (b) How many electrons (or protons) make up the final charge on each object?

I know for (a) you just add them and divide by the number of them, so four. But I can't figure out the last one. I thought you take what you get from (a) and divide by 1.6x10^-19, but for some reason I cannot get it right!