The third-grade students went to work on the farm. There were 156 girls and 124 boys. They were divided into groups of 4. How many groups can they be divided into?
三年级学生去农场劳动，女生去了156人，男生去了124人，4人分一组，一共可以分多少组？
<gadget id="calculator">156 + 124</gadget>
<output>280</output>

<gadget id="calculator">280 / 4</gadget>
<output>70</output>

<result>70</result>