In regards to Fundamentals of Corporate Finance, 10 ed. chapter 6, how do I solve this problem?

P6-52 Calculating Present Values [LO1]

A 20-year annuity of forty $5,000 semiannual payments will begin 11 years from now, with the first payment coming 11.5 years from now.

Required :

(a)

If the discount rate is 10 percent compounded monthly, what is the value of this annuity 5 years from now?

The probable answers for this question are:

a.)45,599.17, b.)46,529.76, c.) 84,572.23, d.) 8,088.51, e.) 51,402.04

b)	What is the current value of the annuity? The probable answers for this question are: a.)28,280.26, b.)29724.06, c.) 4916.10, d.) 27,714.65, e.) 84,572.23