Suppose that you have the option to lease a new car, which you otherwise intend to purchase for $$21,000.$ The lease terms: $$3000$ down and payments of $$298$ per month for $48$ months, at the beginning of each month. Upon termination, you can purchase the car for an addition payment of $$7000$ at lease expiration. If your financing rate is $5\mathrm{.}1\%$ APR, and you discount the lease$-$purchase option using that same rate, how much will pay to buy car $($in present$-$value terms$)$ using the lease$-$purchase option?