I really need help understanding this problem. Much appreciated.

Please answer by filling in the blanks with blue outline as shown in the chart.

A company reports the following beginning inventory and two purchases for the month of January. On January 26, the company sells 420 units. Ending inventory at January 31 totals 170 units. Beginning inventory on January 1 Purchase on January 9 Purchase on January 25 Units 380 90 120 Unit Cost $ 3.70 3.90 4.00 Required: Assume the perpetual inventory system is used. Determine the costs assigned to ending inventory when costs are assigned based on the FIFO method. Perpetual FIFO: Goods purchased Cost of Goods Sold Inventory Balance Cost per Date # of units Cost per unit # of units sold Cost per Cost of Goods unit Sold # of units Inventory Balance unit January 1 January 9 January 25 January 26 Totals