Orion Iron Corp. tracks the number of units purchased and sold throughout each year but applies its inventory costing method at the end of the year, as if it uses a periodic inventory system. Assume its accounting records provided the following information at the end of the annual accounting period, December 31. Transactions Units Unit Cost (a) Inventory, December 31, 2011 500 $ 10 For the year 2012: (b) Purchase, April 11 800 8 (c) Purchase, June 1 700 12 (d) Sale, May 1 (sold for $38 per unit) 500 (e) Sale, July 3 (sold for $38 per unit) 520 (f) Operating expenses (excluding income tax expense), $19,000 Required: (1) Calculate the number and cost of goods available for sale. (2) Calculate the number of units in ending inventory.