Xiaodong is 8 years old this year, his father is 5 times his age this year, how old is his father than Xiaodong?
小冬今年8岁，爸爸今年的年龄是他的5倍，爸爸比小冬大多少岁．
<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<gadget id="calculator">40 - 8</gadget>
<output>32</output>

<result>32</result>