Logan had seamless rain gutters installed around her home at a cost of $1,600. She financed the total amount for18 monthsat an annual interest rate of3.5% compoundedmonthly. What is the amount of her monthly payment? (Round your answer to the nearest cent.)$ After making 12 payments, Logan decided to repay the loan in full. How many payments did she have left at this time? paymentsWhat is Logan's payoff (in dollars)? (Round your answer to the nearest cent.)$