Suppose you are going to receive $$12,900$ per year for six years. The appropriate interest rate is $7\mathrm{.}8$ percent.

a$-1.$ What is the present value of the payments if they are in the form of an ordinary annuity? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

a$-2.$ What is the present value if the payments are an annuity due? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$-1.$ Suppose you plan to invest the payments for six years. What is the future value if the payments are an ordinary annuity? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$-2.$ Suppose you plan to invest the payments for six years. What is the future value if the payments are an annuity due? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

$\backslash$table$[[$a$-1.$ Present value of an ordinary annuity,$],[$a$-2.$ Present value of an annuity due,$],[$b$-1.$ Future value of an ordinary annuity,$],[$b$-2.$ Future value of an annuity due,$]]$