Slapshot Company makes ice hockey sticks. During the month of June, 18,000 sticks were completed at a cost of goods manufactured of $509,000. Suppose that on June 1, Slapshot had 5,300 units in finished goods inventory costing $160,000 and on June 30, 7,000 units in finished goods inventory costing $215,000.

Cost of goods manufactured	$509000
Finished goods inventory, June 1	160000
Finished goods inventory, June 30	215000
Cost of goods sold	$454000

Calculate the number of sticks that were sold during June. ______units