Automotive Excellence Inc. borrowed $18,000.00 on March 10 with an interest rate of 6.7% per annum. On April 7, $6000.00 was repaid, and on June 5, $5600.00 was repaid. Automotive Excellence paid the balance of the loan on October 13. 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.)