The students in Class 1 of the fifth grade participated in the activity of "Welcoming the Asian Games and Beautifying Yangcheng". They could be divided into groups of 9 or 12, and all of them were just finished. At least how many students in class one of five years participated in this activity?
五年级一班的同学参加"迎亚运，美化羊城"活动，可以分成9人一组，也可以分成12人一组，都刚好分完．五年一班至少有多少个同学参加这次活动？
<gadget id="calculator">3 * 3 * 2 * 2</gadget>
<output>36</output>

<result>36</result>