The Torre Company has the following stockholders' equity account balances in stockholders equity on December 31.

Common Stock $5 par, 500,000 shares authorized	$300,000
Paid-In Capital in Excess of ParCommon Stock	640,000
Preferred Stock $100 par, 100,000 shares authorized	570,000
Paid-In Capital in Excess of ParPreferred	130,000
Retained Earnings	240,000
Treasury Stock (cost $10 per share)	140,000

How many shares of common stock are outstanding?