Lenagar Lumber Inc. is making monthly payments of $$572\mathrm{.}39$ and paying nominal $9\%$ interest on a current loan. The initial loan was scheduled to be

paid off in $3$ years. Immediately after the ${15}^{th}$ payment business conditions allow Lenagar to pay off the loan. Determine the amount of the loan balan due after the ${15}^{th}$ payment.