In $1,000 multiples at a 6% interest rate; all borrowings and repayments occur at the end of the month; interest is paid at the time of repaying principal and computed on the portion of principal repaid at that time. If the cash excess (deficiency) before financing is ($1,500) for January, $2,600 for February, and $17,500 for March, the interest paid during the quarter (ignoring compounding) is: