There are two cups of water, A and B, and cup A contains 0.2 kg of water. If (1/3) is poured from cup B to cup A, the two cups will have the same amount of water. What is the original amount of water in cup B?
有甲、乙两杯水，甲杯装水0.2千克，如果从乙杯中倒出(1/3)给甲杯，两杯水就一样多，乙杯原来装水多少千克．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">0.2 / (1/3)</gadget>
<output>0.6</output>

<result>0.6</result>