Business finance question--- retained earnings?

Quantum Technology had $665,000 of retained earnings on December 31, 2010. The company paid common dividends of $38,200 in 2010 and had retained earnings of $585,000 on December 31, 2009. (a) How much did Quantum Technology earn during 2010? (Omit the "$" sign in your response.) Earnings available to common stockholders$ (b) What would earnings per share be if 48,600 shares of common stock were outstanding? (Round your answer to 2 decimal places. Omit the "$" sign in your response.) Earnings per share$ Please help im so confused!!