Question

Fan + Medal, Need someone to walk me through this

Answer 1

you have the formula and the equation
the thing that you may be confused is with the "n"
that is the number of moles of electrons that are exchanged in the reaction
If you want to find the number of electrons you have to write the two half redox reactions and balance them for mass and charge.
I can help you with that if that is your interest.
Otherwise the n in your case is equal to 6 moles of electrons
just replace the values in your formula and you will get the answer