*Brief Exercise 6-4 Martinez Limited uses the FIFO cost formula in a perpetual inventory system. Fill in the missing amounts for items [1] to [18] in the following perpetual inventory schedule: (Round all answers to nearest whole 5,212.) Purchases Cost of Goods Sold Balance Date Units Cost Total Units Cost Total Units Cost Total Apr. 1 12 $25 $300 6 24 $528 [1] $ [2] [3] $ [4] [5] $ [6] $ 9 12 [7] $ 12 [8] $ [9] $ [10] [11] $ [12] $ 14 $11 $121 [13] [14] [15] $ [16] [17] $ [18] $