According to 1-(1/2)=(1/(1*2)), (1/2)-(1/3)=(1/(2*3)), (1/3)-(1/ 4)=(1/(3*4)), (1/4)-(1/5)=(1/(4*5)), ..., calculate the following formula with a simple method: (1/(1* 2))+(1/(2*3))+(1/(3*4))+…+(1/(9998*9999))+(1/(9999*100000)).
根据1-(1/2)=(1/(1*2))，(1/2)-(1/3)=(1/(2*3))，(1/3)-(1/4)=(1/(3*4))，(1/4)-(1/5)=(1/(4*5))，…，用简便方法计算下列算式：(1/(1*2))+(1/(2*3))+(1/(3*4))+…+(1/(9998*9999))+(1/(9999*100000))．
<gadget id="calculator">1 / 10_000</gadget>
<output>1/10_000 = around 0.0001</output>

<gadget id="calculator">1 - (1/10_000)</gadget>
<output>9_999/10_000 = around 0.9999</output>

<result>9_999/10_000 = around 0.9999</result>