PLEASE give me FORMULA for this question ASAP!

$2\mathrm{.}2$ Calculate the total expenses for the six months.

a$.$ The total expenses is the sum of all the expenses incurred for the month.

b$.$ Be sure to sum all of the expenses including the "Loan Interest" that$[$will be calculated in a later task.

c$.$ Reuse your function to complete the total expenses for$*$ach month.