You have just purchased a new warehouse. To finance the purchase, you've arranged for

a $25-$year mortgage loan for $75$ percent of the $$3,900,000$ purchase price. The monthly

payment on this loan will be $$18,000.$

a$.$ What is the 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 EAR on this loan? $($Do not round intermediate calculations and enterf

your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$