Garry already has $$110,500$ in one of his investment accounts that earns $5\mathrm{.}2\%$ compounded annually. He has decided to contribute an additional $$450$ to the investment at the start of each quarter until he retires in $24$ months.

a$.$ How much will Garry have in his investment when he retires?

Considering inflows and outflows of cash, enter the appropriate values in the blanks below. Round final dollar answer to $2$ decimal places.

Mode $=$

N $=$

IY $=$

CY $=$

PV $=$

PMT $=$

PY $=$

FV $=$

b$.$ What total additional contribution did Garry make to his investment over the $24$ months?