What is the fraction of a simplest fraction whose numerator is doubled and whose denominator is doubled to equal (1/2).
一个最简分数，把它的分子扩大2倍，分母缩小2倍后等于(1/2)，这个分数是多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">(1/2) / 4</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>