If the future value of an ordinary, $6-$year annuity is $$6,600$ and interest rates are $7\mathrm{.}5$ percent, what is the future value of the same annuity due?

Note: Round your percentage answer to $2$ decimal places $($i$.$e$.,0\mathrm{.}1234$ should be entered as $1234).$

Future value $$