A barrel of beer is poured out (2/3), exactly 12 kg. How much does the barrel of beer weigh in kilograms?
一桶啤酒倒出(2/3)，刚好倒出12千克．这桶啤酒原来重多少千克．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">12 / (2/3)</gadget>
<output>18</output>

<result>18</result>