There is half a bucket of water in a bucket, and after pouring out 40% of the water, there is 2.4 kg left. How many kilograms of water can this bucket hold?
一个水桶里装有半桶水，倒出水的40%后，还剩2.4千克．这个水桶能装水多少千克？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">2.4 / (3/5)</gadget>
<output>4</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>