$16$Calculate the future value of an ordinary annuity consisting of monthly payments of $$350$ for five years. The rate of return was $10\mathrm{.}5\%$ compounded monthly for the first two years, and will be $9\mathrm{.}0\%$ compounded monthly for the last three years. $($Do not round intermediate calculations and round your final answer to $2$ decimal places.$)$

Future value $?$