Calculation: (1/(1*3))+(2/(3*5))+(2/(5*7))+…(2/(97*99))+(2/(99*101 )).
计算：(1/(1*3))+(2/(3*5))+(2/(5*7))+…(2/(97*99))+(2/(99*101))．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 101</gadget>
<output>1/101 = around 0.009901</output>

<gadget id="calculator">(2/3) - (1/101)</gadget>
<output>199/303 = around 0.656766</output>

<result>199/303 = around 0.656766</result>