can i get help on (a2)?

Inventory data for Waterway Company are reported as follows. Assume a sale of 480 units occurred on June 15 for a selling price of $9 and a sale of 400 units on June 27 for $9. Calculate cost of goods available for sale. The cost of goods available for sale $ eTextbook and Media (a2) Calculate Moving- Average unit cost for June 1,12,15,23 \& 27. (Round answers to 3 decimol ploces, es. 2.525.) June 1$ June 12$ June 15$ June 23$ June 27$