Uncle is 45 years old this year, my age is uncle's (2/5), how old am I.
叔叔今年有45岁，我的年龄是叔叔的(2/5)，我有多少岁．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">45 * (2/5)</gadget>
<output>18</output>

<result>18</result>