can you explain how to solve this? thanks

Save-the-Earth Co. reports the following income statement accounts for the year ended December 31. Sales discounts 920 office salaries expense 3,700 Rent expense office space 3,200 Advertising expense 840 Sales returns and allowances 420 Office supplies expense 840 Cost of goods sold 12,400 sales 54,000 Insurance expense 2,700 Sales staff salaries 4,200 Required: Prepare a multiple-step income statement for the year ended December 31. Save-the-Earth Co. Income Statement For Year Ended December 31 Expenses Selling expenses Total selling expenses General and administrative expenses Total general and administrative expenses Total expenses