Can you please provide the explanation on how to get the total inventory?

Determining Lower of Cost or Net Realizable Value (NRV) The following data refer to Froning Company's ending inventory. Item Code Quantity Unit Cost Unit NRV LXC 50 $45 $48 KWT 210 MOR 300 20 NES 100 27 32 38 34 22 Determine the ending inventory amount by applying the lower of cost or net realizable value rule to: (a) each item of inventory $ 18,090 (b) the total inventory. X $