How can I solve this problem on a BA II Plus financial calculator?

A 12-year annuity pays $2,500 per month, and payments are made at the end of each month. The interest rate is 9 percent compounded monthly for the first four years, and 7 percent compounded monthly thereafter. What is the present value of the annuity? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) Present value