Could you please explain the solution of this question, I would really appreciate it if it include solution with explanation that I can understand it .

CHAPTER 6 Inventory Costing and Valuation Problem 6-12A Lower of cost and net realizable value LO4 CHECK FIGURES: 1a. $536,273; 1b. $527,895 The following information pertains to the physical inventory of Electronics Unlimited taken at December 31 Per Unit Product Units on Hand Cost NRV Audio equipment: Wireless audio receivers...................... 332 $199 $188 Touchscreen MP3 players ...............(....."" 247 203 223 313 193 177 191 85 103 Video equipment: 467 253 298 5GB video cards... 278 171 183 OSOS . TE 15 Satellite video recorders............" 199 613 618 Car equipment: GPS navigators ...........45.(1/4:($14:"' 172 171 145 Double-DIN Car Deck with iPod/iPhone Control and Aux Input................ 157 213 198 Required 1. Calculate the LCNRV for the: a. Inventory by major group b. Inventory, applied separately to each product. 2. Prepare the appropriate entry, if any, for (a) and (b). Problem 6-13A Estimating ending inventory-gross profit method LO6