Fields, Incorporated, has the following book value balance sheet: a. What is the debt-equity ratio based on book values? (Do not round intermediate calculations and round your answer to 3 decimal places, e.g., 32.161.) b. Suppose the market value of the company's debt is $157.5 million and the market value of equity is $670 million. What is the debt-equity ratio based on market values? (Do not round intermediate calculations and round your answer to 3 decimal places, e.g., 32.161.)