How do I compute Current ratios and acid test ratio, days sales uncollected, inventory turnover, sales sales in inventory, debt to equity ratio, times interest earned, profit margin ratio, total asset turnover, return on total assets and the return on common stockholders equity without rounding intermediate calculations

Selected current year-end financial statements of Cabot Corporation follow. (All sales were on credit; selected balance sheet amounts at December 31 of the prior year were inventory, $48,900; total assets, $189,400; common stock, $90,000; and retained earnings, $33,748.) CABOT CORPORATION Income Statement For Current Year Ended December 31 Sales $ 448 , 600 Cost of goods sold 297, 250 Gross profit 151, 350 Operating expenses 98 , 600 Interest expense 4, 100 Income before taxes 48 , 650 Income tax expense 19, 598 Net income $ 29, 052 CABOT CORPORATION Balance Sheet December 31 Assets Liabilities and Equity Cash $ 10, 000 Accounts payable $ 17, 500 Short-term investments 8 , 400 Accrued wages payable 3, 200 Accounts receivable, net 33, 700 Income taxes payable 3, 300 Merchandise inventory 32, 150 Long-term note payable, secured 63, 400 by mortgage on plant assets Prepaid expenses 2, 650 Common stock 90 , 000 Plant assets, net 153 , 300 Retained earnings 62, 800 Total assets $ 240, 200 Total liabilities and equity $ 240, 200