You are the loan department supervisor for a bank. This installment loan is being paid off early, and it is your task to calculate the rebate fraction, the finance charge rebate (in $), and the payoff for the loan (in $). (Round dollars to the nearest cent.)

Amount Financed	Number of Payments	Monthly Payment	Payments Made	Rebate Fraction	Finance Charge Rebate	Loan Payoff
$1,800	18	$129.89	15		$	$