63 male students and 45 female students play games together. How many groups can each group of 9 people be divided into?
63名男同学和45名女同学一起做游戏．每9人一组，可以分成多少组？
<gadget id="calculator">63 + 45</gadget>
<output>108</output>

<gadget id="calculator">108 / 9</gadget>
<output>12</output>

<result>12</result>