Xiao Ming is 2 years old this year, and his mother is 26 years old. Then, how many years later, his mother's age will be three times that of Xiao Ming.
小明今年2岁，妈妈26岁，那么，多少年后妈妈的年龄是小明的3倍．
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">26 - 6</gadget>
<output>20</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<result>10</result>