((x)/2)+((x)/(2*3))+((x)/(3*4))+…+((x)/(2010*2011))=2010, then x = how much.
((x)/2)+((x)/(2*3))+((x)/(3*4))+…+((x)/(2010*2011))=2010，则x=多少．
<gadget id="calculator">2_010 / 2_011</gadget>
<output>2_010/2_011 = around 0.999503</output>

<gadget id="calculator">2_010 / (2_010/2_011)</gadget>
<output>2_011</output>

<result>2_011</result>