The number A is less than the number B (2/13), so how much more the number B is than the number A
甲数比乙数少(2/13)，那么乙数比甲数多多少
<gadget id="calculator">2 / 13</gadget>
<output>2/13 = around 0.153846</output>

<gadget id="calculator">1 - (2/13)</gadget>
<output>11/13 = around 0.846154</output>

<gadget id="calculator">(2/13) / (11/13)</gadget>
<output>2/11 = around 0.181818</output>

<result>2/11 = around 0.181818</result>