Stockholders' equityPaid$-$in capitalPreferred stock, cumulative, $9,000$ shares authorized, $5,400$ shares issued and outstandingCommon stock, no par, $755,000$ shares authorized, $585,000$ shares issuedTotal paid$-$in capitalRetained earningsTotal paid$-$in capital and retained earningsLess: Treasury stock $(6,800$ common shares$)$Total stockholders' equity$$540,0002,925,0003,465,0001,150,0004,615,00036,300$L $$4,578,700$From a review of the stockholders' equity section, answer the following questions.$($a$)$ How many shares of common stock are outstanding?Common stock outstandingshares