Lauer Corporation uses the periodic inventory system and has provided the following information about one of its laptop computers: Date Transaction 1/1 Beginning Inventory 5/5 Purchase 8/10 Purchase 10/15 Purchase Number of Units Cost per Unit 120 $ 820 220 $ 920 320 $ 1,020 210 $ 1,070 During the year, Lauer sold 800 laptop computers. What was cost of goods sold using the LIFO cost flow assumption?