A sailboat costs $$27,103.$ You pay $10\%$ down and amortize the rest with equal monthly payments over a $12-$year period. If you must pay $8\mathrm{.}1\%$ compounded monthly, what is your monthly payment? How much interest will you pay?

Monthly payments: $ $($Round to two decimal places.$)$

Interest: $ $($Round to two decimal places.$)$