A container is filled with 165 grams of brine with a concentration of 2%, and 35 grams of brine with a concentration of 12% is added to it. What is the concentration of the mixed brine?
一个容器中装有浓度为2%的盐水165克，向其中加入了浓度为12%的盐水35克，混合后的盐水浓度为多少？
<gadget id="calculator">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">165 * (1/50)</gadget>
<output>33/10 = around 3.3</output>

<gadget id="calculator">12 / 100</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">35 * (3/25)</gadget>
<output>21/5 = around 4.2</output>

<gadget id="calculator">(33/10) + (21/5)</gadget>
<output>15/2 = around 7.5</output>

<gadget id="calculator">165 + 35</gadget>
<output>200</output>

<gadget id="calculator">(15/2) / 200</gadget>
<output>3/80 = around 0.0375</output>

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

<gadget id="calculator">(3/80) * 1</gadget>
<output>3/80 = around 0.0375</output>

<result>3/80 = around 0.0375</result>