Calculation: (1/(1*2))+(1/(2*3))+(1/(3*4))+(1/(4*5))+(1/(5*6) )+...+(1/(2007*2008)).
计算：(1/(1*2))+(1/(2*3))+(1/(3*4))+(1/(4*5))+(1/(5*6))+…+(1/(2007*2008))．
<gadget id="calculator">1 / 2_008</gadget>
<output>1/2_008 = around 0.000498</output>

<gadget id="calculator">1 - (1/2_008)</gadget>
<output>2_007/2_008 = around 0.999502</output>

<result>2_007/2_008 = around 0.999502</result>