Boris received a $$1800$ bonus. He decided to invest it in a $2-$year certificate of deposit $($CD$)$ with an annual interest rate of $1\mathrm{.}21\%$ compounded annually.

Answer the questions below. Do not round any intermediate computations, and round your final answers to the nearest cent. If necessary, refer t the list of financial formulas.

$($a$)$ Assuming no withdrawals are made, how much money is in Boris' account after $2$ years?

$$$

$($b$)$ How much interest is earned on Boris' investment after $2$ years?

$