a$-1.$ Calculate the present value of an annual payment of $$870\mathrm{.}00$ you would received

for $12$ years if the interest rate is $5\mathrm{.}51\%.($Do not round intermediate calculations.

Round your answer to $2$ decimal places.$)$

Present value

a$-2.$ Calculate the present value of an annual payment of $$696\mathrm{.}00$ you would received

for $16$ years if the interest rate is $5\mathrm{.}51\%.($Do not round intermediate calculations.

Round your answer to $2$ decimal places.$)$

Present value

b$-1.$ Calculate the present value of an annual payment of $$870\mathrm{.}00$ you would received

for $12$ years if the interest rate is $10\mathrm{.}90\%.($Do not round intermediate calculations.

Round your answer to $2$ decimal places.$)$

Present value

b$-2.$ Calculate the present value of an annual payment of $$696\mathrm{.}00$ you would received

for $16$ years if the interest rate is $10\mathrm{.}90\%.($Do not round intermediate calculations.

Round your answer to $2$ decimal places.$)$