A simple fraction, its numerator is enlarged by 2 times, and the denominator is reduced by 2 times is equal to (3/5), what is the simplest fraction?
一个最简分数，把它的分子扩大2倍，分母缩小2倍后等于(3/5)，这个最简分数是多少．
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">(3/2) / 10</gadget>
<output>3/20 = around 0.15</output>

<result>3/20 = around 0.15</result>