Last year​ Sanderson, Inc. had sales of 3.9 million. The​ firm's cost of goods sold came to 2.5 ​million, its operating expenses excluding depreciation of 105000 were 402000 ​, and the firm paid 150000 in interest on its bank loans. ​ Also, the corporation received 52000 in dividend income​ (from a company in which it owned less than 20 percent of its​ shares) but paid 22000 in the form of dividends to its own common stockholders. Use the corporate tax rates shown in the popup​ window, .​, to calculate the​ corporation's tax liability. What are the​ firm's average and marginal tax​ rates?