There is a simple fraction, and the denominator is added to its numerator and denominator. The new fraction obtained is three times the original fraction. What is the simplest fraction?
有一个最简分数，把它的分子与分母都加上分母，所得的新分数是原分数的3倍，这个最简分数是多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>