On January 1, 2018, Sandhill Corp. had 480,000 shares of common stock outstanding. During 2018, it had the following transactions that affected the Common Stock account. February 1 Issued 117,000 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 62,000 shares of treasury stock (a) Determine the weighted-average number of shares outstanding as of December 31, 2018. The weighted-average number of shares outstanding