The following data has been collected about Keller Company's stockholders' equity accounts:

$\backslash$table$[[$Common stock $$10$ par value $22,000$ shares authorized, $11,000,],[$shares issued, and $1,200$ shares outstanding,$110,000],[$Paid$-$in capital in excess of par value, common stock,$52,000],[$Retained earnings,$27,000],[$Treasury stock,$14,040]]$

Assuming the treasury shares were all purchased at the same price, the number of shares of treasury stock is: