You have just purchased a new condominium. To finance the purchase, you$$ve arranged for a $35-$year mortgage loan for $85$ percent of the $$3,500,000$ purchase price. The monthly payment on this loan will be $$17,600.$

a$.$ What is the $($Annual Percentage Rate$)$ APR on this loan? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ What is the $($Effective Annual Rate$)$ EAR on this loan? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$