You have some extra cash this month and you are considering putting it toward your car loan. Your interest rate is 7.2%, your loan payments are $641 per month, and you have 36 months left on your loan. If you pay an additional $1,000 with your next regular $641 payment (due in one month), how much will it reduce the amount of time left to pay off your loan? (Note: Be careful not to round any intermediate steps less than 6 decimal places.)