(Corporate income tax) G. R. Edwin Inc. had sales of $5.87 million during the past year. The cost of goods sold amounted to $2.9 million. Operating the firm's tax liability. What are the firm's average and marginal tax rates? The firm's tax liability for the year is $ (Round to the nearest dollar.) The firm's average tax rate is %. (Round to two decimal places.) The firm's marginal tax rate is %. (Round to the nearest integer.) Data table