There are two containers, the water in one container is twice the water in the other container, if 8 liters of water are poured from each container, then the water in one container is three times the water in the other container. How many liters of water is there in the container with less water.
有两个容器，一个容器中的水是另一个容器中水的2倍，如果从每个容器中都倒出8升水，那么一个容器中的水是另一个容器中水的3倍．有较少水的容器原有水多少升．
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">2 / 1</gadget>
<output>2</output>

<gadget id="calculator">8 / 1</gadget>
<output>8</output>

<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<result>16</result>