A=12\dfrac{1}{2}+16+112+120+130++19900\dfrac{1}{6}+\dfrac{1}{12}+\dfrac{1}{20}+\dfrac{1}{30}+-+\dfrac{1}{9900}

B=11.3+13.5+15.7++12009.2011\dfrac{1}{1.3}+\dfrac{1}{3.5}+\dfrac{1}{5.7}+-+\dfrac{1}{2009.2011}

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