Can someone help me with the steps to solving this?

Required information [The following information applies to the questions displayed below.] The following are the transactions for the month of July. Required: . Calculate cost of goods available for sale and ending inventory under weighted average cost. Assume a periodic inventory system s used. . Calculate sales, cost of goods sold, and gross profit, under weighted average cost. Assume a periodic inventory system is used. Complete this question by entering your answers in the tabs below. Calculate sales, cost of goods sold, and gross profit, under weighted average cost. Assume a periodic inventory system is used. (Round "Cost per Unit" to 2 decimal places and your final answers to the nearest whole dollar amount.)