Dirk Ward borrowed $14,000.00 for investment purposes on May 15 on a demand note providing for a variable rate of interest and payment of any accrued interest on December 31. He paid $600 on June 6, $150 on September 15, and $1100 on November 17. How much is the accrued interest on December 31 if the rate of interest was 4% on May 15, 4.5% effective August 1, and 4.75% effective November 1? The accrued interest on December 31 is $0. (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)