A simple fraction, its numerator is expanded by 4 times, and its denominator is reduced by 4 times is (1/5). What is this score.
一个最简分数，把它的分子扩大4倍，分母缩小4倍后是(1/5)．这个分数是多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">(1/5) / 16</gadget>
<output>1/80 = around 0.0125</output>

<result>1/80 = around 0.0125</result>