There are 7 boxes of balls, 29 are distributed to students in the activity class, and there are 6 left. How many balls are there on average in each box?
有7盒皮球，活动课分给学生29个后还剩6个，平均每盒有多少个皮球．
<gadget id="calculator">29 + 6</gadget>
<output>35</output>

<gadget id="calculator">35 / 7</gadget>
<output>5</output>

<result>5</result>