Calculate (1/2)-(1/3)=(1/(2*3)), (1/3)-(1/4)=(1/(3*4)),... The result of /(2*3))+(1/(3*4))+…+(1/(2013*2014)).
根据(1/2)-(1/3)=(1/(2*3))，(1/3)-(1/4)=(1/(3*4))，…，计算(1/(2*3))+(1/(3*4))+…+(1/(2013*2014))的结果．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 2_014</gadget>
<output>1/2_014 = around 0.000497</output>

<gadget id="calculator">(1/2) - (1/2_014)</gadget>
<output>503/1_007 = around 0.499503</output>

<result>503/1_007 = around 0.499503</result>