In 15 years, a $18000 machine is expected to be worth $4000. A new machine at that time is expected to sell for $45000. In order to provide funds for the difference between the replacement cost and the salvage value, a sinking fund is set up into which equal payments are placed at the end of each year. If the fund earns 4.5% compounded annually, how much should each payment be?

The payments should be of $

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