Calculation: ((2/3/7+4/6/14+14/21/49)/(4/7/9+8/14/18+28/49/63))=how much.
计算：((2/3/7+4/6/14+14/21/49)/(4/7/9+8/14/18+28/49/63))=多少．
<gadget id="calculator">2 / 3 / 7</gadget>
<output>2/21 = around 0.095238</output>

<gadget id="calculator">4 / 6 / 14</gadget>
<output>1/21 = around 0.047619</output>

<gadget id="calculator">14 / 21 / 49</gadget>
<output>2/147 = around 0.013605</output>

<gadget id="calculator">(2/21) + (1/21) + (2/147)</gadget>
<output>23/147 = around 0.156463</output>

<gadget id="calculator">4 / 7 / 9</gadget>
<output>4/63 = around 0.063492</output>

<gadget id="calculator">8 / 14 / 18</gadget>
<output>2/63 = around 0.031746</output>

<gadget id="calculator">28 / 49 / 63</gadget>
<output>4/441 = around 0.00907</output>

<gadget id="calculator">(4/63) + (2/63) + (4/441)</gadget>
<output>46/441 = around 0.104308</output>

<gadget id="calculator">(23/147) / (46/441)</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>