The numerator of a fraction is enlarged by 5 times, and the denominator is reduced by 5 times to get 2(1/2). What is the fraction?
一个分数的分子扩大5倍，分母缩小5倍得2(1/2)，这个分数是多少．
<gadget id="calculator">5 / 5</gadget>
<output>1</output>

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

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>