The function $f(x)=500e^{0\mathrm{.}02x}$ represents the rate of flow of money in dollars per year. Assume a $15-$year period at $4\%$ compounded continuously. Find $(A)$ the present value, and $(B)$ the accumulated amount of money flow at $t=15.$

$($A$)$ The present value is $

$($Do not round until the final answer. Then round to the nearest cent as needed.$)$