The numerator and denominator of a fraction are divided twice by 2 and once by 3, and the simplest fraction (3/5) is obtained. What is the original fraction?
一个分数的分子、分母用2约分了两次，用3约分了一次，得到最简分数(3/5)，这个分数原来是多少．
<gadget id="calculator">3 * 12</gadget>
<output>36</output>

<gadget id="calculator">5 * 12</gadget>
<output>60</output>

<gadget id="calculator">36 / 60</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>