Divide the denominator of a fraction by (1/4), what is the numerator to keep the size of the fraction constant?
一个分数的分母除以(1/4)，要使分数的大小不变，分子应多少．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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