please help. thank you.

20. value 2.50 points Problem 5-50 Variable Interest Rates [LO 1] A 12-year annuity pays $2,900 per month and payments are made at the end of each month. The interest rate is 8 percent compounded monthly for the first eight years, and 6 percent compounded monthly thereafter. Required: What is the present value of the annuity? (Enter rounded answer as directed, but do not use rounded numbers in intermediate calculations. Round your answer to 2 decimal places (e.g. 32.16).) Present value