$3\mathrm{.}33pts$

Based on the corporate valuation model, Wang Inc.$\text{'}$s total corporate value is $$700$ million. Its balance sheet shows $$100$ million notes payable, $$200$ million of long$-$term debt, $$40$ million of common stock $($par plus paid$-$in$-$capital$),$ and $$160$ million of retained earnings. What is the best estimate for the firm's value of equity $($in millions$)?$

$$492$

$$324$

$$400$

$$340$

$$444$