Calculation: (1/(3*5))+(1/(5*7))+(1/(7*9))+…+(1/(97*99)).
计算：(1/(3*5))+(1/(5*7))+(1/(7*9))+…+(1/(97*99))．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 99</gadget>
<output>1/99 = around 0.010101</output>

<gadget id="calculator">(1/3) - (1/99)</gadget>
<output>32/99 = around 0.323232</output>

<gadget id="calculator">(1/2) * (32/99)</gadget>
<output>16/99 = around 0.161616</output>

<result>16/99 = around 0.161616</result>