A bucket of pure water, drink 5 liters, accounting for (1/6) of the total. How many liters are left?
一桶纯净水，喝去5升，占总量的(1/6)．还剩下多少升？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">5 / (1/6)</gadget>
<output>30</output>

<gadget id="calculator">30 - 5</gadget>
<output>25</output>

<result>25</result>