Fields, Incorporated, has the following book value balance sheet:

Assets Total Debt and Equity

Current assets $ $140,000,000$ Total debt $ $250,000,000$

Equity

Common stock $ $30,000,000$

Capital surplus $77,000,000$

Net fixed assets $415,000,000$ Accumulated retained earnings $198,000,000$

Total shareholders' equity $ $305,000,000$

Total assets $ $555,000,000$ Total debt and shareholders' equity $ $555,000,000$

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$.,32\mathrm{.}161.)$

b$.$ Suppose the market value of the company's debt is $$251\mathrm{.}5$ million and the market value of equity is $$685$ 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$.,32\mathrm{.}161.)$