The 2016 annual report for mega mills disclosed that 1 billion shares of common stock have been authorized. at the end of 2015, 820 million shares had been issued and the number of shares in treasury stock was 113 million. during 2016, the only common share transactions were that 17 million common shares were reissued from treasury and 32 million common shares were purchased and held as treasury stock. required: determine the number of common shares (a) issued, (b) in treasury, and (c) outstanding at the end of 2016. (enter your answers in millions.)