(1/3)+(1/15)+(1/35)+(1/63)+...+(1/9999).
(1/3)+(1/15)+(1/35)+(1/63)+…+(1/9999)．
<gadget id="calculator">1 / 101</gadget>
<output>1/101 = around 0.009901</output>

<gadget id="calculator">1 - (1/101)</gadget>
<output>100/101 = around 0.990099</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(100/101) * (1/2)</gadget>
<output>50/101 = around 0.49505</output>

<result>50/101 = around 0.49505</result>