what is the common stock amount?

The corporate charter of Pina Colada Corporation allows the issuance of a maximum of 31,200,000 shares of $1 par value common stock. During its first three years of operation, Pina issued 2,350,000 shares at $15 per share. It later acquired 38,000 of these shares as treasury stock for $25 per share. Based on the above information, answer the following questions: (a) How many shares were authorized