There is 150 grams of 4% brine in container A. Take 450 grams of brine from container B and add it to container A, and mix it with the brine in container A to form 8.2% brine. What is the concentration of the brine in container B?
甲容器中有4%的盐水150克，从乙容器中取出盐水450克加到甲容器中，和甲容器中的盐水混合成8.2%的盐水，乙容器中盐水的浓度是多少．
<gadget id="calculator">150 + 450</gadget>
<output>600</output>

<gadget id="calculator">8.2 / 100</gadget>
<output>0.082</output>

<gadget id="calculator">600 * 0.082</gadget>
<output>49.2</output>

<gadget id="calculator">4 / 100</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">150 * (1/25)</gadget>
<output>6</output>

<gadget id="calculator">49.2 - 6</gadget>
<output>43.2</output>

<gadget id="calculator">43.2 / 450</gadget>
<output>0.096</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">0.096 * 1</gadget>
<output>0.096</output>

<result>0.096</result>