The third grade students go to work on the farm. There are 156 girls and 112 boys. Every 4 students are divided into groups. How many groups can they be divided into?
三年级学生去农场劳动，女生156人，男生112人，每4人分一组，一共可以分多少组？
<gadget id="calculator">156 + 112</gadget>
<output>268</output>

<gadget id="calculator">268 / 4</gadget>
<output>67</output>

<result>67</result>