Xiaohong's age is younger than Xiaoling's (2/3), how much is Xiaohong's age than Xiaoling's.
小红年龄比小玲小(2/3)，小红年龄是小玲的多少．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>