When water freezes, its volume increases (1/11), and when hydration turns into ice, its volume decreases by how much.
水结成冰时，它的体积增加了(1/11)，水化成冰时，体积减小了多少．
<gadget id="calculator">1 / 11</gadget>
<output>1/11 = around 0.090909</output>

<gadget id="calculator">1 + (1/11)</gadget>
<output>12/11 = around 1.090909</output>

<gadget id="calculator">1 * (12/11)</gadget>
<output>12/11 = around 1.090909</output>

<gadget id="calculator">(12/11) - 1</gadget>
<output>1/11 = around 0.090909</output>

<gadget id="calculator">(1/11) / (12/11)</gadget>
<output>1/12 = around 0.083333</output>

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