Dad is 36 years old this year, four times the age of Xiao Ming, how old is Dad older than Xiao Ming?
爸爸今年36岁，是小明年龄的4倍，爸爸比小明大多少岁．
<gadget id="calculator">36 / 4</gadget>
<output>9</output>

<gadget id="calculator">36 - 9</gadget>
<output>27</output>

<result>27</result>