Please let me know how you do this problem! Especially how do you find the "sale revenue". I know it is 10970x "$", how do you know "$" for sales revenue and how to find it?

The following information relates to Glassworks Ltd's inventory transactions during the month of July. July 1 4 Cost/Unit $12.00 $12.50 Amount $50,400 72,500 8 Beginning inventory Purchase Sale Sale Purchase Sale Units 4,200 5,800 6,500 1,500 5,250 2,970 14 22 $12.90 67,725 28 All of the units sold were priced at $22 per unit. (a) Your answer is partially correct. Glassworks Ltd. uses the perpetual inventory system. Calculate Glassworks' cost of goods sold, gross margin, and ending inventory for the month of July using: i. FIFO ii. weighted-average (Round calculations for cost per unit to 4 decimal places, e.g. 10.5219 and final answers to 0 decimal places, e.g. 61,052.) Cost of Goods Sold Gross Margin Ending Inventory TA 135413 $ $ 55212 i. FIFO $ $ ii. Weighted average