If A is more than B (1/10), how much less is B than A?
甲比乙多(1/10)，那么乙比甲少多少．
<gadget id="calculator">10 / 1</gadget>
<output>10</output>

<gadget id="calculator">11 - 10</gadget>
<output>1</output>

<gadget id="calculator">1 / 11</gadget>
<output>1/11 = around 0.090909</output>

<result>1/11 = around 0.090909</result>