If a box of pencils is divided among 5 or 6 children on average, there will be one more pencil. How many pencils are there in this box?
一盒铅笔平均分给5个小朋友或6个小朋友，都多出1支，这盒铅笑至少有多少支？
<gadget id="calculator">5 * 6</gadget>
<output>30</output>

<gadget id="calculator">30 + 1</gadget>
<output>31</output>

<result>31</result>