A is a bottle of 600 kg of 8% sulfuric acid solution, and B is a bottle of 400 kg of 40% sulfuric acid solution. How many kilograms of the solution can be exchanged between the two containers to make the concentration of the sulfuric acid solution the same?
甲是一瓶重量为600千克的8%的硫酸溶液，乙是一瓶400千克的40%的硫酸溶液，两个容器交换多少千克溶液，才能使得其中的硫酸溶液浓度相同？
<gadget id="calculator">8 / 100</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">600 * (2/25)</gadget>
<output>48</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">400 * (2/5)</gadget>
<output>160</output>

<gadget id="calculator">48 + 160</gadget>
<output>208</output>

<gadget id="calculator">600 + 400</gadget>
<output>1_000</output>

<gadget id="calculator">208 / 1_000</gadget>
<output>26/125 = around 0.208</output>

<gadget id="calculator">600 * (26/125)</gadget>
<output>624/5 = around 124.8</output>

<gadget id="calculator">(624/5) - 48</gadget>
<output>384/5 = around 76.8</output>

<gadget id="calculator">(2/5) - (2/25)</gadget>
<output>8/25 = around 0.32</output>

<gadget id="calculator">(384/5) / (8/25)</gadget>
<output>240</output>

<result>240</result>