Shown below is information relating to the stockholders' equity of Robertson Corporation at December 31, 2022: 12% cumulative preferred stock, $150 par $1,500,000 Common stock, $1.50 par Additional paid-in capital: preferred stock Additional paid-in capital: common stock 600,000 300,000 900,000 180,000 1,350,000 Treasury stock (at cost. 6,000 common shares) Retained earnings Refer to the above data. How many shares of common stock are outstanding?

Shown below is information relating to the stockholders' equity of Robertson Corporation at December 31, 2022 . \begin{tabular}{|l|r|} \hline 12% cumulative preferred stock, $150 par & $1,500,000 \\ \hline Common stock, $1.50 par & 600,000 \\ \hline Additional paid-in capital preferred stock & 300,000 \\ \hline Additional paid-in capital common stock & 900,000 \\ \hline Treasury stock (at cost. 6.,000 common shares) & 180,000 \\ \hline Retained earmings & 1,350,000 \\ \hline \end{tabular} Refer to the above data. How many shares of common stock are outstanding? Shown below is information relating to the stockholders' equity of Robertson Corporation at December 31, 2022 . \begin{tabular}{|l|r|} \hline 12% cumulative preferred stock, $150 par & $1,500,000 \\ \hline Common stock, $1.50 par & 600,000 \\ \hline Additional paid-in capital preferred stock & 300,000 \\ \hline Additional paid-in capital common stock & 900,000 \\ \hline Treasury stock (at cost. 6.,000 common shares) & 180,000 \\ \hline Retained earmings & 1,350,000 \\ \hline \end{tabular} Refer to the above data. How many shares of common stock are outstanding