X Company no longer has the space necessary to produce all of its parts. A company has offered to supply one of X Company's parts for $26.08 per unit. This year, production was 15,000 units; next year, production is expected to be 17,850 units. Total production costs for the part this year were:

Materials	$156,450
Direct labor	140,100
Variable overhead	85,950
Fixed overhead	35,700
Total	$418,200

$9,639 of X Company's fixed overhead can be avoided if it buys the part. In addition, if X Company buys the part, it will be able to rent some equipment that will no longer be needed, to a company for $2,250.

X Company is uncertain about its 17,850 unit production estimate for next year. At what level of production would X Company be indifferent between making and buying the part next year?