Pour 6 liters of water in container A into container B. At this time, the water in container A is as much as the water in container B. It turns out that container A holds more water than container B by how many liters.
将甲容器里的6升水倒入乙容器，这时甲容器里的水就和乙容器里的水一样多，原来甲容器比乙容器多盛水多少升．
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<result>12</result>