need help with part b of the question

The accounting records of Coronado Industries show the following data. (a) Your answer is correct. Calculate average unit cost. (Round answer to 3 decimal places, eg. 5.125.) Average unit cost $ Determine cost of goods sold during the period under a periodic inventory system using the FIFO method, the LIFO method, the average-cost method. (Round answers to 0 decimal places, e.g. 125.)