If the volume of water increases (1/12) when it freezes into ice, then how much does the volume decrease when ice turns into water?
若水结成冰后，体积比原来增加(1/12)，则冰化成水后，体积减少了多少．
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 + (1/12)</gadget>
<output>13/12 = around 1.083333</output>

<gadget id="calculator">1 * (13/12)</gadget>
<output>13/12 = around 1.083333</output>

<gadget id="calculator">(13/12) - 1</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/12) / (13/12)</gadget>
<output>1/13 = around 0.076923</output>

<result>1/13 = around 0.076923</result>