The Tomac Swim Club arranged short-term financing of $12,800.00 on July 9 with the Bank of Commerce and secured the loan with a demand note. The club repaid the loan by payments of $6500 on September 12, $3200 on November 26, and the balance on December 30. Interest, calculated on the daily balance and charged to the club's current account on the last day of each month, was at 6% per annum on July 9. The rate was changed to 5% effective September 1 and to 5.75% effective December 1. How much interest was paid on the loan?

The total interest paid was $_____

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