Calculation: (1-(1/(2**2)))*(1-(1/(3**2)))*…*(1-(1/(99**2))).
计算：(1-(1/(2**2)))*(1-(1/(3**2)))*…*(1-(1/(99**2)))．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">100 / 99</gadget>
<output>100/99 = around 1.010101</output>

<gadget id="calculator">(1/2) * (100/99)</gadget>
<output>50/99 = around 0.505051</output>

<result>50/99 = around 0.505051</result>