help me fill in the table because I am not understanding

$ The equity sections for Atticus Group at the beginning of theyear (January 1) and the end of the year (December 31) follow: Stockholders' equity (January 1) Common stock - $4 par value 100,000 shares authorized, 40,000 shares issued and outstanding. 160,000 Paid-in capital in excess of par value, common stock 120,000 Retained earnings 320,000 Total stockholders' equity $ 600,000 $ Stockholders' equity (December 31) Common stock - $4 par value, 100,000 shares authorized, 40,000 shares issued and outstanding. Paid-in capital in excess of par value, common stock Retained earnings 189,600 179,200 400,000 768,800 (30,000 738,800 Less cost of treasury stock Total stockholders' equity $ The following transactions and events affected its equity during the year: Jan. 5 Declared a $0.50 per share cash dividend, date of record January 10. Mar. 20 Purchased treasury stock for cash. Apr. 5 Declared a $0.50 per share cash dividend, date of record April 10. July 5 Declared a $0.50 per share cash dividend, date of record July 10. July 31 Decleared a 20% stock dividend when the stock's market value was $12 per share Issued the stock dividend that was declared on July 31. Oct. 5 Declared a $0.50 per share cash dividend, date of record October 10. Aug. 14 Required: 1. How many common shares are outstanding on each dividend date? Jan. 5 Apr. 5 Jul. 5 Oct. 5 Beginning Balance Less Treasury Plus Dividend shares Common Shares Outstanding