Hey! Can you explain and help me to answer this question? Thank you for your help in advance.

Foxburg Company has the following information: Beginning inventory Ending inventory Purchases of materials (net) Cost of Goods Sold Manufacturing overhead Work-in-Process $ 300 $ 700 $ 7,700 $ 15,60 0 $ 4,300 What was the cost of goods available for sale for the period? Finished Goods $ 400 $ 900 Materials $ 500 $1,500