There are 18 boys and 17 girls in class 21. How many groups can they be divided into if the activities are carried out in groups of 5 students?
二1班有男生18人，女生17人，如果按5个同学一组进行活动，可以分成几组？
<gadget id="calculator">18 + 17</gadget>
<output>35</output>

<gadget id="calculator">35 / 5</gadget>
<output>7</output>

<result>7</result>