A, B, C three fractions, the ratio of their numerators is 3:2:4, the ratio of denominators is 5:9:15, the sum of these three numbers is 28/45 after division, then the smallest fraction is How many.
A，B，C三个分数，它们的分子之比是3：2：4，分母之比是5：9：15，这三个数之和约分后是28/45，则其中最小的分数是多少．
<gadget id="calculator">28 / 45</gadget>
<output>28/45 = around 0.622222</output>

<gadget id="calculator">27 + 10 + 12</gadget>
<output>49</output>

<gadget id="calculator">10 / 49</gadget>
<output>10/49 = around 0.204082</output>

<gadget id="calculator">(28/45) * (10/49)</gadget>
<output>8/63 = around 0.126984</output>

<result>8/63 = around 0.126984</result>