Problem $7-13($LG $7-4)$ You plan to purchase a $\backslash (\backslash$$ $400,000\backslash )$ house using a $15-$year mortgage obtained from your bank. The mortgage rate offered to you is $4\mathrm{.}80$ percent. You will make a down payment of $20$ percent of the purchase price. a$.$ Calculate your monthly payments on this mortgage. b$.(1)$ Construct the amortization schedule for the mortgage. b$.(2)$ How much total interest is paid on this mortgage? Complete this question by entering your answers in the tabs below. Req B$1$ Req A Interest Construct the amortization schedule for the mortgage? $($Do not round intermediate calculations. Round your answers to $2$ decimal places. $($e$.$g$.,32\mathrm{.}16))$