Based on the corporate valuation model, Wang Inc.$$s total corporate value is $$425$ 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$)?$