Four identical metallic objects carry the following charges: $+1\mathrm{.}29,+6\mathrm{.}82,-4\mathrm{.}22,$ and $-9\mathrm{.}45$ C$.$ 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?