There are 4 buckets, if 6 kg of water is poured out of each bucket, then the remaining weight of the 4 buckets of water is exactly equal to the original weight of 1 bucket. How many kilograms per bucket of water.
有4个水桶，如果从每桶中倒出6千克水，那么4桶水剩下的重量正好等于原来1桶的重量．原来每桶水多少千克．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">6 * (4/3)</gadget>
<output>8</output>

<result>8</result>