please help me with part a and b

You have just received a windfall from an investment you made in a friend's business. Ho will be paying you $22,089 at the end of this year, $44,178 at the end of the following year, and $66,267 at the end of the year after that three years from today). The interest rate is 12.6% per year. a. What is the present value of your windfall? b. What is the future value of your windfall in three years (on the date of the last payment)? a. What is the present value of your windfall? The present value of your windfall is $. (Round to the nearest dollar)