Please solve this and show work thanks $.$

Serena Medavoy will invest $$7,680$ a year for $20$ years in a fund that will earn $4\%$ annual interest.

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If the first payment into the fund occurs today, what amount will be in the fund in $20$ years? If the first payment occurs at year$-$end, what amount will be in the fund in $20$ years? $($Round factor values to $5$ decimal places, e$.$g$.1\mathrm{.}25124$ and final answers to $0$ decimal places, e$.$g$.458,581.)$

First payment today

$

First payment at year$-$end

$