(1/2)+(5/6)+(11/12)+(19/20)+...+(9899/9900)=how much.
(1/2)+(5/6)+(11/12)+(19/20)+…+(9899/9900)=多少．
<gadget id="calculator">1 / 100</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">1 - (1/100)</gadget>
<output>99/100 = around 0.99</output>

<gadget id="calculator">99 - (99/100)</gadget>
<output>9_801/100 = around 98.01</output>

<result>9_801/100 = around 98.01</result>