Calculation: (1-(1/2))*(1-(1/3))*(1-(1/4))*…(1-(1/2012))*(1-(1/2013 ))
计算：(1-(1/2))*(1-(1/3))*(1-(1/4))*…(1-(1/2012))*(1-(1/2013))
<gadget id="calculator">1 / 2_013</gadget>
<output>1/2_013 = around 0.000497</output>

<result>1/2_013 = around 0.000497</result>