((1/2)+(1/3)+(1/5))/(1/30)+((1/3)+(1/5)+(1/7))/(1/105 )+((1/5)+(1/7)+(1/9))/(1/315)=how much.
((1/2)+(1/3)+(1/5))/(1/30)+((1/3)+(1/5)+(1/7))/(1/105)+((1/5)+(1/7)+(1/9))/(1/315)=多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/2) + (1/3) + (1/5)</gadget>
<output>31/30 = around 1.033333</output>

<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(31/30) / (1/30)</gadget>
<output>31</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">(1/3) + (1/5) + (1/7)</gadget>
<output>71/105 = around 0.67619</output>

<gadget id="calculator">1 / 105</gadget>
<output>1/105 = around 0.009524</output>

<gadget id="calculator">(71/105) / (1/105)</gadget>
<output>71</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(1/5) + (1/7) + (1/9)</gadget>
<output>143/315 = around 0.453968</output>

<gadget id="calculator">1 / 315</gadget>
<output>1/315 = around 0.003175</output>

<gadget id="calculator">(143/315) / (1/315)</gadget>
<output>143</output>

<gadget id="calculator">31 + 71 + 143</gadget>
<output>245</output>

<result>245</result>