A bucket of water, when the water freezes, its volume increases (1/10), and when the ice turns into water, its volume decreases by how much.
一桶水，当水结成冰时，它的体积增加(1/10)，当冰化成水时，它的体积少了多少．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">(11/10) - 1</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) / (11/10)</gadget>
<output>1/11 = around 0.090909</output>

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