can you explaim how you got the numbers for the question marks in the balance sheet as well

Category Accounts payable Accounts receivable Accruals Cash Common Stock COGS Depreciation expense Gross fixed assets Interest expense Inventories Long-term debt Net fixed assets Notes payable Operating expenses (excl. depr.) Retained eamings Sales Taxes 2016 300 900 450 1,500 1.200 1,050 72 2,250 120 750 1,500 1,875 825 225 750 1.950 90 2017 750 825 300 ?? 1.500 1,100 ?? 2,700 150 1,125 1,650 2,250 690 300 850 2,250 120 The firm's Return on Equity (ROE) for 2017 is 18.20% 21.49% 24.89% 27.45% 30.85%