Please show the detailed calculation process.

The following inventory transactions took place for Sandhill Ltd. for the year ended December 31, 2017: Cost/ Selling Date Jan1 Jan 5 sale Feb 15 purchase Mar 10 purchase May 20 sale Aug 22 purchase Sep 12 sale Nov 24 purchase Dec5 sale Event Quantity Price opening inventory 20,800 $46.00 5,200 77.75 37,100 42.25 1,000 50.25 1,500 77.75 5,300 4425 9,900 77.75 2,000 52.50 5,900 77.75 Calculate the ending inventory balance for Sandhill Ltd, assuming the company uses a periodic inventory system and the weighted average cost formula. Also calculate the per-unit cost of the last item sold. (Round weighted average cost and unit costs of next unit to be sold to 2 decimal ploces, e.g. 52.75 and ending inventory to 0 decimal places, e.g. 5,275.) 6243 Ending inventory Unit cost of the last item sold 45.5