(1-(1/(2**2)))(1-(1/(3**2)))…(1-(1/(9**2)))(1-(1/( What is the value of 10**2)))?
(1-(1/(2**2)))(1-(1/(3**2)))…(1-(1/(9**2)))(1-(1/(10**2)))的值是多少．
<gadget id="calculator">1 * 2 * 10</gadget>
<output>20</output>

<gadget id="calculator">11 / 20</gadget>
<output>11/20 = around 0.55</output>

<result>11/20 = around 0.55</result>