The Assembly Department of? Intuitive, Inc., manufacturer of? computers, had? 4,500 units of beginning inventory in? September, and? 3,000 units were transferred to it by the Production Department. The Assembly Department completed? 1,500 units during the month and transferred them to the Packaging Department. Calculate the total number of units accounted for by the Assembly Department if it had? 6,000 units in ending inventory. The? weighted-average method is used.