(1+(1/2))*(1+(1/4))*(1+(1/6))*(1+(1/8))*(1+(1/3))* (1+(1/5))*(1+(1/7))(1+(1/9))=how much.
(1+(1/2))*(1+(1/4))*(1+(1/6))*(1+(1/8))*(1+(1/3))*(1+(1/5))*(1+(1/7))(1+(1/9))=多少．
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">7 / 6</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">9 / 8</gadget>
<output>9/8 = around 1.125</output>

<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">8 / 7</gadget>
<output>8/7 = around 1.142857</output>

<gadget id="calculator">10 / 9</gadget>
<output>10/9 = around 1.111111</output>

<gadget id="calculator">(3/2) * (5/4) * (7/6) * (9/8) * (4/3) * (6/5) * (8/7) * (10/9)</gadget>
<output>5</output>

<result>5</result>