If the accrued amount remains in the plan for the next 15 years without deposits or withdrawals, how much money will be in the account 21 years after the plan began?

Question

Suppose a recent college graduate's first job allows her to deposit $200 at the end of each month in a savings plan that earns 12%, compounded monthly. This savings plan continues for 6 years before new obligations make it impossible to continue. If the accrued amount remains in the plan for the next 15 years without deposits or withdrawals, how much money will be in the account 21 years after the plan began? (Round your answer to the nearest cent.) 

Answer 1

A = (200[(1 + 0.01)⁷² - 1]/0.01)·1.01¹⁸⁰ = $125564,00