The third graders participate in tree planting on Arbor Day. There are 56 girls and 64 boys. If every 4 students are divided into groups, how many groups can they be divided into?
三年级学生在植树节参加植树，女生有56人，男生64人，如果每4名分成一组，一共可以分多少组？
<gadget id="calculator">56 + 64</gadget>
<output>120</output>

<gadget id="calculator">120 / 4</gadget>
<output>30</output>

<result>30</result>