Given an interest rate of $7\mathrm{.}15$ percent per year, what is the value at year t $=8$ of a perpetual stream of $$3,513$ payments that begin at year t $=20?($Do not include the dollar sign $($$$).$ Enter rounded answer as directed, but do not use the rounded numbers in intermediate calculations. Round your answer to $2$ decimal places $($e$.$g$.,32\mathrm{.}16).)$