Question 7 Sheffield Limited uses the average cost formula in a perpetual inventory system. Fill in the missing amounts for items [1] to (13] in the following perpetual inventory schedule. (Round per unit cost and total cost to 2 decimal places, e.g. 15.23.) Purchases Cost of Goods Sold Balance Date Units Cost Total Units Cost Total Units Cost Total April 1 16 $182 $2,912 6 29 $5,887 [1] $ [2] [4] $ [3] $ 9 25 [5] $ [6] $ [7] [9] $ [8] $ 14 $209 $2,508 [10] [11] [13] $ [12] $