Carla Vista Inc. presented the following data:

Net income

Common shares: Shares outstanding, Jan. $1,2023$

Issued for cash, May $1,2023$

$654,000$

$117,000$

Acquired treasury shares for cash, Sept. $1,2023($shares cancelled$)$

$2-$for$-1$ stock split, Oct. $1,2023$

$156,000$

$$6,290,000$

$654,000$

$117,000$

$156,000$

$\backslash$table$[[$Issued for cash, May $1,2023,654,000],[$Acquired treasury shares for cash, Sept. $1,2023($shares cancelled$),117,000],[2-$for$-1$ stock split, Oct. $1,2023,156,000],[,],[$As at January $1,2023,$ there were no dividends in arrears. On December $31,2023,$ Carla Vista declared and paid the preferred,$]]$

dividend for $2023.$

$($a$)$

Calculate the weighted average number of common shares at December $31,2023.($Round answer to $0$ decimal places, e$.$g$.5275.)$