If the numerator of a fraction is enlarged by 4 times and the denominator is reduced by 2 times, (2/3) is obtained. What is the original fraction?
把一个分数的分子扩大4倍，分母缩小2倍后得到(2/3)，原来的分数是多少．
<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">(1/2) / 6</gadget>
<output>1/12 = around 0.083333</output>

<result>1/12 = around 0.083333</result>