There is a kind of simplest true fraction, the product of their numerator and denominator is 140, if all such fractions are arranged in ascending order, what is the third fraction?
有一种最简真分数，它们的分子与分母的乘积都是140，如果把所有这样的分数从小到大排列，那么第三个分数是多少．
<gadget id="calculator">5 / 28</gadget>
<output>5/28 = around 0.178571</output>

<result>5/28 = around 0.178571</result>