Test Company reported the following income statement for the most recent period.

Sales (6,000 units)	$120,000
Variable expenses	72,000
Contribution margin	48,000
Fixed expenses	30,000
Operating income	$18,000

Test Companys sales manager proposed holding a Holiday Sale. Prices would be discounted 5% and an additional $1,000 would be used for advertising to promote the event. Determine the number of units Test Company must sell during the promotion to continue earning $18,000.

Note: Give your answer using commas. Do not include the word units.

Example: 12,345