If you invest $$10,000$ per period for the following number of periods, how much would you have in each of the following instances?

a$.$ In $9$ years at $10$ percent? $($Do not round intermediate calculations. Round your final answer to $2$ decimal places.$)$

b$.$ In $50$ years at $8$ percent? $($Do not round intermediate calculations. Round your final answer to $2$ decimal places.$)$