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

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