a$.$ What is the discount rate for the mortgage?

The discount rate for the mortgage is $,\%.($Round to six decimal places to answer, but carry full precision for remaining calculations.$)$

b$.$ What is the monthly mortgage payment?

The monthly mortgage payment is $$,($Round to the nearest cent, for example, $1234\mathrm{.}56$ to answer, but carry full precision for remaining calculations.$)$

c$.$ What is the remaining balance on the mortgage?

The remaining balance is $$,.($Round to the nearest cent.$)$

d$.$ How much cash will you have from the sale once you pay off the mortgage?

The amount of cash left over from the sale is $$.($Round to the nearest cent.$)$