Sixth grade students went to learn from Lei Feng, 168 female students and 156 male students participated. 4 students are divided into groups, how many groups can they be divided into?
六年级的同学去参加学雷锋活动，女同学有168人参加，男同学有156人参加．4个同学分成一组，可以分成多少个小组？
<gadget id="calculator">168 + 156</gadget>
<output>324</output>

<gadget id="calculator">324 / 4</gadget>
<output>81</output>

<result>81</result>