Explain the math please

Financial data for Joel de Paris, Inc., for last year follow: Joel de Paris, Inc Balance Sheet Beginning Ending Balance Balance Assets Cash $ 136,000 129,000 337,000 580,000 837,000 407,000 245,000 Accounts receivable 487,000 471,000 843,000e 433,000 251,000 Inventory Plant and equipment, net Investment in Buisson, S.A Land (undeveloped) $ 2,542,00 2,614,000 Total assets Liabilities and Stockholders Equity Accounts payable Long-term debt Stockholders' equity $ 386,000 335,000 1,041,000 1,115,000 1:233 00 1,041,0e0 $ 2,542,000 2,614,000 Total liabilities and stockholders equity Joel de Paris, Inc. Income Statement $ 4,775,000 Sales Operating expenses 4,106,500 Net operating income Interest and taxes: 668, 500e $ 122,000 206,000 Interest expense 328,000 Tax expense $ 340,500 Net income The company paid dividends of $217,500 last year. The "Investment in Buisson, S.A.," on the balance sheet represents an investment in the stock of another company. The company's minimum required rate of return of 15% Required 1. Compute the company's average operating assets for last year. 2. Compute the company's margin, turnover, and return on investment (ROI) for last year. (Do not round intermediate calculations and round your final answers to 2 decimal places.) 3. What was the company's residual income last year? 1. Average operating assets 2. Margin Turnover ROI 3. Residual income