I need help with this problem om in accounting I just can't get it

Here is what the question uses as a reference and how the answer should be posted:
Compute the weighed average of the common shares outstanding for 2003

Outstanding shares on December 31, 2002.. . 40,000
2003
Treasury stock purchase on April 1.. .  4,000
Issuance of new shares on June 30.. .
12,000
10% stock dividend on October 1.. .
4,800
Outstanding shares on December 31, 2003.. . 52,800
2004
Issuance of new shares on July 1.. .
16,000
Treasury stock purchase on November 1.. .  4,800
Outstanding shares on December 31, 2004.. . 64,000
2005
Issuance of new shares on August 1.. .
20,000
Treasury stock purchase on September 1.. .  4,000
3-for-1 stock split on October 1.. .
160,000
Outstanding shares on December 31, 2005.. . 240,000

CORTEZ, INC.

Part 1. Year 2003 weighted-average shares:

Outstanding Effect of Fraction Weighted
Time Period Shares Dividend of Year Average[/B]January-March
April-June
July-September
October-December
Weighted-average shares outstanding

I am sorry this doesn't look like my form but this is where the answers go Thanks so much

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