David Partridge bought a saddle from Linville Western Gear with an $8\mathrm{.}5\%$ add$-$on interest installment loan. The purchase price of the saddle was $$1,750\mathrm{.}00.$ The loan required a $15\%$ down payment and equal monthly payments for $36$ months.a$)\_\_\_\_\_\_\_\_\_\_\_\_$What is the total deferred payment price of the saddle?