This has a lot of steps. Please help

Futuristic Electronic Center began December with 100 units of merchandise inventory that cost $78 each. During December, the store made the following purchases: E (Click the icon to view the purchases.) Futuristic uses the periodic inventory system, and the physical count at December 31 indicates that 130 units of merchandise inventory are on hand. Read the requirements Requirement 1. Determine the ending merchandise inventory and cost of goods sold amounts for the December financial statements using the FIFO, LIFO, and weighted-average inventory costing methods FIFO Ending inventory Cost of goods sold