please help me solve this problem. please show formulas on excel. thank you.

On January 1, 2021, Stellar Corp. had 459,000 shares of common stock outstanding. During 2021, it had the following transactions that affected the Common Stock account. February 1 Issued 123,000 shares March 1 Issued a 10% stock dividend May 1 Acquired 101,000 shares of treasury stock June 1 Issued a 3-for-1 stock split October 1 Reissued 57,000 shares of treasury stock (a) Determine the weighted average number of shares outstanding as of December 31, 2021. The weighted average number of shares outstanding