$$ K

On June $21,$ Fat Tires Ltd$.$ borrowed $$8000\mathrm{.}00$ with an interest rate of $9\mathrm{.}8\%.$ The loan was repaid in full on October $11,$ with payments of $$3000\mathrm{.}00$ on July $5$ and $$3500\mathrm{.}00$ on

August $10.$ What was the final payment?

The final payment was $

$($Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.$)$