The third-grade students go to work in the quality education base. There are 81 boys and 83 girls. Every 4 people are divided into groups. How many groups can they be divided into?
三年级学生去素质教育基地劳动，男生81人，女生83人，每4人分成一组，一共可以分成多少组？
<gadget id="calculator">81 + 83</gadget>
<output>164</output>

<gadget id="calculator">164 / 4</gadget>
<output>41</output>

<result>41</result>