Sheridan Casino Company earned $23,470,000 before interest and taxes last year and had interest expenses of $1,681,000. If the firm is taxed at 25% on taxable income up to $15,000,000 and 28% on taxable income above $15,000,000, calculate the firm's tax obligation. What are the marginal and the average tax rates for this company? (Round intermediate calculations and final answer to 2 decimal places, e.g. 1725.00 and 17.25%. Marginal tax rate % Average tax rate %