(1+(1/2))/(1-(1/4))*(1+(1/6))/(1-(1/8))*(1+(1/10))/ (1-(1/12))*(1+(1/14))/(1-(1/16))=how much.
(1+(1/2))/(1-(1/4))*(1+(1/6))/(1-(1/8))*(1+(1/10))/(1-(1/12))*(1+(1/14))/(1-(1/16))=多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/2) / (3/4)</gadget>
<output>2</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 + (1/6)</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 - (1/8)</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">(7/6) / (7/8)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 - (1/12)</gadget>
<output>11/12 = around 0.916667</output>

<gadget id="calculator">(11/10) / (11/12)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">1 / 14</gadget>
<output>1/14 = around 0.071429</output>

<gadget id="calculator">1 + (1/14)</gadget>
<output>15/14 = around 1.071429</output>

<gadget id="calculator">1 / 16</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">1 - (1/16)</gadget>
<output>15/16 = around 0.9375</output>

<gadget id="calculator">(15/14) / (15/16)</gadget>
<output>8/7 = around 1.142857</output>

<gadget id="calculator">2 * (4/3) * (6/5) * (8/7)</gadget>
<output>128/35 = around 3.657143</output>

<result>128/35 = around 3.657143</result>