When water freezes, its volume increases by 1/11. Then, when ice turns into water again, its volume decreases.
水结成冰的时候，体积增加了原来的(1/11)，那么，冰再化成水时，体积会减少多少．
<gadget id="calculator">11 + 1</gadget>
<output>12</output>

<gadget id="calculator">12 - 11</gadget>
<output>1</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<result>1/12 = around 0.083333</result>