Everything in red is wrong. Please show work

Splish Co. follows the practice of valuing its inventory at the lower-of-cost-or-market. The following information is available from the company's inventory records as of December 31, 2017. Completion & Disposal Cost/Unit Normal Profit Estimated Replacement Selling Item Quantity Unit Cost Cost/Unit Price/Unit Margin/Unit 1,800 1,500 1,700 1,700 2,100 $8.03 8.77 5.99 4.07 6.85 $8.99 8.45 5.78 4.49 6.74 $11.24 10.06 7.70 6.74 7.17 $1.61 0.96 1.23 0.86 0.75 $1.93 1.28 0.64 1.61 1.07 Greg Forda is an accounting clerk in the accounting department of Splish Co., and he cannot understand why the market value keeps changing from replacement cost to net realizable value to something that he cannot even figure out. Greg is very confused, and he is the one who records inventory purchases and calculates ending inventory. You are the manager of the department and an accountant