Please help me solve (b2)

Lily Distribution markets CDs of the performing artist Unique. At the beginning of October, Lily had in beginning inventory 2,000 of Unique's CDs with a unit cost of \$7. During October, Lily made the following purchases of Unique's CDs. During October, 10,750 units were sold. Lily uses a periodic inventory system. Determine the cost of goods available for sale. Cost of goods available for sale $ Calculate cost per unit. (Round answer to 2 decimal places, eg. 2.25.) Determine (1) the ending inventory and (2) the cost of goods sold under each of the assumed cost flow methods (FIFO, LIFO, and average-cost). (Round answers to O decimal places es. 1,250)