Industrial Mfg. Co. has $24 million in sales. Its current accounts receivable turnover ratio is 4.0, but it thinks it can improve to a turnover of 5.0. If the new turnover ratio is reached, what will be the change in free cash flow to the firm (FCFF)? Enter your answer with one decimal place, and include a negative sign if necessary (e.g. 9.9 or -9.9)