Given that a=(1/100), b=(1/101), then ((ab)/(1+ab-ab))=how many.
已知a=(1/100)，b=(1/101)，则((a-b)/(1+a-b-ab))=多少．
<gadget id="calculator">1 / 10_100</gadget>
<output>1/10_100 = around 0.000099</output>

<gadget id="calculator">101 / 100</gadget>
<output>101/100 = around 1.01</output>

<gadget id="calculator">100 / 101</gadget>
<output>100/101 = around 0.990099</output>

<gadget id="calculator">(101/100) * (100/101)</gadget>
<output>1</output>

<gadget id="calculator">(1/10_100) / 1</gadget>
<output>1/10_100 = around 0.000099</output>

<result>1/10_100 = around 0.000099</result>