After the older brother gave the younger brother 2 pencils, and they both have the same number of pencils, it turns out that the older brother has more pencils than the younger brother.
哥哥给弟弟2只铅笔后，两人的铅笔数一样多，则原来哥哥比弟弟多多少只．
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<result>4</result>