There are three fractions, (28/45), (35/54), (14/27) divided by the same fraction, the quotients obtained are all integers, what is the maximum fraction.
有三个分数，(28/45)、(35/54)、(14/27)除以同一个分数，得到的商都是整数，这个分数最大是多少．
<gadget id="calculator">7 / 810</gadget>
<output>7/810 = around 0.008642</output>

<result>7/810 = around 0.008642</result>