Given the purchases below and ending inventory of 630, determine the cost of goods sold using the weighted-average method.

	# of units purchased	Cost per unit	Total cost
Beginning inventory	170	$2.80	$476
July 1 purchase	540	$3.30	1,782
October 9 purchase	380	$3.65	1,387
Goods available for sale	1,090		$3,645