Current Attempt in Progress Cullumber Company uses a perpetual inventory system. 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: Calculate gross profit for the year. (Round answer to 0 decimal places, eg. 5,275.) Current Attempt in Progress Cullumber Company uses a perpetual inventory system. 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: Calculate gross profit for the year. (Round answer to 0 decimal places, eg. 5,275.)