The 6 young pioneers collected 240 used batteries. If each box contains 8 batteries, there are still 2 boxes left. How many boxes were there?
6个少先队员收集了240节废旧电池，如果每盒装8节，还差2个盒．原来有几个盒？
<gadget id="calculator">240 / 8</gadget>
<output>30</output>

<gadget id="calculator">30 - 2</gadget>
<output>28</output>

<result>28</result>