For a box of pencils, the average score for 5 people is 2, and the average score for 6 people is 2. At least how many pencils are there in this box.
一盒铅笔，平均分给5人差2枝，平均分给6人也差2只．这盒铅笔至少有多少枝．
<gadget id="calculator">2 * 3 * 5</gadget>
<output>30</output>

<gadget id="calculator">30 + 2</gadget>
<output>32</output>

<result>32</result>