Dad is 28 years older than Xiao Ming, and his age this year is three times that of Xiao Ming. How old is Xiao Ming?
爸爸比小明大28岁，爸爸今年的年龄是小明的3倍．小明今年几岁？
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">28 / 2</gadget>
<output>14</output>

<result>14</result>