please provide excel explanation

A 4-year annuity of eight $11,400 semiannual payments will begin 9 years from now, with the first payment coming 9.5 years from now. The discount rate is 11 percent compounded monthly. a. What is the value of this annuity five years from now? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) b. What is the value three years from now? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) What is the current value of the annuity? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) C. Value at Year 5 b. Value at Year 3 c. Value today