Please help me with all 3 sections. FIFO, LIFO, and Average-Cost

Sandhill Company Inc. had a beginning inventory of 110 units of Product RST at a cost of $7 per unit. During the year, purchases were: Sandhill Company uses a periodic inventory system. Sales totaled 1,520 units. (a) Your answer is correct. Determine the cost of goods available for sale. The cost of goods available for sale $ Calculate weighted-average cost per unit. (Round answer to 3 decimal places, e.g. 5.125.) Weighted-average cost per unit $ eTextbook and Media Attempts: 3 of 4 used (b) Your answer is partially correct. Determine the ending inventory and the cost of goods sold under each of the assumed cost flow methods (FIFO, LIFO, and average-cost). (Round answers to 0 decimal places, e.g. 150.) The cost of goods available for sale $ Calculate weighted-average cost per unit. (Round answer to 3 decimal places, e.g. 5.125.) Weighted-average cost per unit $ eTextbook and Media Attempts: 3 of 4 (b) Your answer is partially correct. Determine the ending inventory and the cost of goods sold under each of the assumed cost flow methods (FIFO, LIFO, and average-cost). (Round answers to 0 decimal places, e.g. 150.) eTextbook and Media Last saved 1 second ago. Attempts: 2 of 4 used Saved work will be auto-submitted on the due date. Autosubmission can take up to 10 minutes. (c) The parts of this question must be completed in order. This part will be available when you complete the part above