Your cousin will sell you his coffee shop for $$200,000,$ with "seller financing," at a $5\mathrm{.}0\%$ nominal annual rate. The terms of the loan would require you to make $12$ equal end$-$of$-$month payments per year for $3$ years, and then make an additional final $($balloon$)$ payment of $$40,000$ at the end of the last month. What would your equal monthly payments be$?$