what is the present value of this cash flow at 6%, 10%, and 23% discount rates?

Unequal cash flow. Given the following cash inflow, what is the present value of this cash flow at 6%, 10%, and 23% discount rates? Year 1: Year 2: $3,500 $9,000 Years 3 through 7: $0 Year 8: $25,000 What is the present value of this cash flow at 6% discount rate? (Round to the nearest cent)