In the Sunshine Sports aerobics competition, a total of 252 students in the third grade participated. It is known that there are 6 classes in the third grade. During the competition, each class is divided into 6 groups on average. How many people are there in each group?
在阳光体育健美操比赛中，三年级一共252人参加，已知三年级一共有6个班，在比赛时，每个班又平均分成6个小组，每个小组有多少人？
<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<gadget id="calculator">252 / 36</gadget>
<output>7</output>

<result>7</result>