Calculation: (4/(1*3*5))+(4/(3*5*7))+…+(4/(93*95*97))+(4/(95*97*99) ).
计算：(4/(1*3*5))+(4/(3*5*7))+…+(4/(93*95*97))+(4/(95*97*99))．
<gadget id="calculator">1 * 3</gadget>
<output>3</output>

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

<gadget id="calculator">97 * 99</gadget>
<output>9_603</output>

<gadget id="calculator">1 / 9_603</gadget>
<output>1/9_603 = around 0.000104</output>

<gadget id="calculator">(1/3) - (1/9_603)</gadget>
<output>3_200/9_603 = around 0.333229</output>

<result>3_200/9_603 = around 0.333229</result>