Cullumber Company uses a perpetual inventory systerm. The company began 2024 with 800 lamps in inventory at a cost of $12 per unit. During 2024, Cullumber had the following purchases and sales of lamps: February 15 Purchased 1,600 units @ $18 per unit April 24 Sold 2,000 units @ $30 per unit June 6 Purchased 2,800 units @ $23 per unit October 18 Sold 1,600 units @ $33 per unit December 4 Purchased 1,120 units @ $26 per unit AlI purchases and sales are on account.

Calculate the cost of goods sold and ending inventory using weighted average.