$(1$ point$)$

Bob makes his first $$900$ deposit into an IRA earning $7\mathrm{.}5\%$ compounded annually on the day he

turns $28$ and his last $$900$ deposit on the day he turns $50(23$ equal deposits in all$).$ With no

additional deposits, the money in the IRA continues to earn $7\mathrm{.}5\%$ interest compounded annually

until Bob retires on his $65$th birthday. How much is the IRA worth when Bob retires?

Value of the IRA on Bob's $65$th birthday: