The students went to participate in the tree planting activity. There are 57 boys and 48 girls. If every 5 people form a group, how many groups can they be divided into?
同学们去参加植树活动，男生有57人，女生有48人，如果每5人为一组，那么可以分成多少组？
<gadget id="calculator">57 + 48</gadget>
<output>105</output>

<gadget id="calculator">105 / 5</gadget>
<output>21</output>

<result>21</result>