When 1 cubic meter of water freezes, its volume increases (1/10) compared to that of water. When the ice melts into water again, its volume decreases.
1立方米的水结成冰，体积比水增加(1/10)，这块冰再融化成水，体积减小多少．
<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">1 / (11/10)</gadget>
<output>10/11 = around 0.909091</output>

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

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