Your grandfather is about to retire, and he wants to buy an annuity that will provide him with $80,000 of income a year for 20 years, with the first payment coming immediately. The going rate on such annuities is 5.25%. How much would it cost him to buy the annuity today?

a. $955,507.24

b. $1,202,089.76

c. $1,027,427.14

d. $1,243,186.84

e. $1,058,249.96

Can you please tell me how to enter this into a financial calculator?