Xiaohong has fewer stamps than Xiaohua (1/5), and Xiaohua gives Xiaohong as much as Xiaohua, and the two have the same amount.
小红的邮票数比小华少(1/5)，小华拿多少给小红，两人一样多．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) / 2</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>