Sapphire aerospace operates 52 weeks per year, and its cost of goods sold last year was $7 comma 540 comma 0007,540,000. the firm carries eight items in inventory: four raw materials, two work-in-process items, and two finished goods. the following table shows last year's average inventory levels for these items, along with their unit values. category part number average inventory units value per unit raw materials rm-1 15 comma 00015,000 $1 rm-2 5,000 $5 rm-3 2,000 $9 rm-4 800 $10 work-in- process wip-1 3,000 $20 wip-2 4,000 $24 finished goods fg-1 1,000 $5656 fg-2 500 $88 a. what is the average aggregate inventory value? $nothing. (enter your response as an integer.)