If the numerator of (4/8) is reduced to the original (1/2), what should be the denominator in order to keep the size of the fraction unchanged?
把(4/8)的分子缩小到原来的(1/2)，要使分数的大小不变，它的分母应多少．
<gadget id="calculator">8 / 4</gadget>
<output>2</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>