The unpaid balance at the start of a 30-day billing cycle was $716.64. A purchase of $48.83 was made on day 14. No payment was made during the billing cycle and a late fee of $40 was charged to the account on day 24. Find the unpaid balance at the end of the billing cycle. Assume that the annual interest rate on a credit card is 19.99% and interest is calculated by the average daily balance method. The unpaid balance at the end of the billing cycle is $ (Round to the nearest cent as needed.)