can you please show the work & whete you are getting the numbers from?

Margaret's Boards sells a snowboard, Xpert, that is popular with snowboard enthusiasts. Information relating to Margaret's purchase of Xpert snowboards during September is shown below. During the same month, 120 Xpert snowboards were sold. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 25 $50 $1,250 Sept. 12 Purchases: 45 58 2,610 Sept. 19 Purchases 15 60 900 Sept. 26 Purchases 40 61 2,440 Totals 125 $7,200 Additional data regarding Margaret's sales of Xpert snowboards are provided below. Assume that Margaret's uses a perpetual inventory system. Date Units Unit Price Total Revenue Sept. 5 Sale 10 $181 $1,810 Sept. 16 Sale 50 181 9,050 Sept. 29 Sale 60 213 12,780 120 $23,640 Totals Calculate moving average cost at Sept 1, 5, 12, 16, 19, 26 & 29. (Round answers to 2 decimal places, e.g. 1.25.) September 1 $ 50 September 5 $ September 12 $ September 16 $ September 19 $ September 26 September 29 EA LA SA 56 58 60 50 56 60