a$-1.$ Calculate the present value of an annual payment of $$510\mathrm{.}00$ you would received for $10$ years if the interest rate is $5\mathrm{.}01\%.($Do not round intermedlate calculations. Round your answer to $2$ decimal places.$)$

Present value

a$-2.$ Calculate the present value of an annual payment of $$408\mathrm{.}00$ you would received for $19$ years if the interest rate is $5\mathrm{.}01\%.($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 $$510\mathrm{.}00$ you would received for $10$ years if the interest rate is $16\mathrm{.}40\%.($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 $$408\mathrm{.}00$ you would received for $19$ years if the interest rate is $16\mathrm{.}40\%.($Do not round intermediate calculations. Round your answer to $2$ decimal places.$)$

Present value

$