If the denominator of a fraction is doubled and the numerator is reduced to half, how many times the fraction becomes the original fraction?
如果一个分数的分母扩大为原来的2倍，分子缩小为原来的一半，那么这个分数变为原分数的多少倍
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>