There are six fractions with a sequential difference (1/25), and their ratio is 1:3:5:7:9:11. What is the sum of these six fractions?
有六个分数的依次相差(1/25)，它们的比是1：3：5：7：9：11，则这六个分数的和是多少．
<gadget id="calculator">1 / 25</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">(1/25) / 2</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">1 + 3 + 5 + 7 + 9 + 11</gadget>
<output>36</output>

<gadget id="calculator">(1/50) * 36</gadget>
<output>18/25 = around 0.72</output>

<result>18/25 = around 0.72</result>