If you invest $8,400 per period for the following number of periods, how much would you have in each of the following instances? Use Appendix C for an approximate answer, but calculate your final answer using the formula and financial calculator methods.

a. In 11 years at 9 percent? (Do not round intermediate calculations. Round your final answer to 2 decimal places.)

b. In 30 years at 10 percent? (Do not round intermediate calculations. Round your final answer to 2 decimal places.)