Drink a glass of water (5/6), how much of this glass of water is left.
将一杯水喝掉(5/6)，还剩这杯水的多少．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 - (5/6)</gadget>
<output>1/6 = around 0.166667</output>

<result>1/6 = around 0.166667</result>