The following information is available for Martin and Eddie Corporation:

January $1,2017$ Shares outstanding $400,000$

May $1,2017$ Treasury shares purchased $100,000$

June $1,2017$ Shares issued $150,000$

October $1,2017$ Shares issued in a $200\%$ stock dividend $900,000$

The number of shares to be used in computing earnings per common share $($WASO$)$ for $2017$ is