Can someone explain the process for how to do closing entries please?

Problem 4-4A Preparing closing entries and interpreting information about discounts and returns LO C2, P3 Valley Company's adjusted trial balance on August 31, its fiscal year-end, follows. It categorizes the following accounts as selling expenses: sales salaries expense, rent expense-selling space, store supplies expense, and advertising expense. It categorizes the remaining expenses as general and administrative. Credit Debit $ 40,300 63,320 $ 24,400 16,880 21,100 8,500 225,500 Merchandise inventory (ending) Other (noninventory) assets Total liabilities Common stock Retained earnings Dividends Sales Sales discounts Sales returns and allowances Cost of goods sold Sales salaries expense Rent expense-Selling space Store supplies expense Advertising expense Office salaries expense Rent expense-Office space Office supplies expense Totals 2,260 13,000 74,100 31,300 8,300 1,300 13,000 28,400 3,700 400 $287,880 $ 287,880 Beginning merchandise inventory was $26,000. Supplementary records of merchandising activities for the year ended August 31 reveal the following itemized costs. Invoice cost of merchandise purchases Purchases discounts received Purchases returns and allowances Costs of transportation-in $91,300 2,900 4,900 4,900 Required: Prepare closing entries as of August 31 (the perpetual inventory system is used)