Chen Xiaohong is 4 years older than Chen Xiaolan, and Chen Xiaohong is older than Chen Xiaolan (1/3). How old is Chen Xiaolan?
陈小红的年龄比陈小兰大4岁，陈小红的年龄比陈小兰的年龄多(1/3)．陈小兰的年龄是多大？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">4 / (1/3)</gadget>
<output>12</output>

<result>12</result>