If you mix 25g of salt water with a salt content of 20% and 100 grams of salt water with a salt content of 10%, what is the salt content of the mixed salt water?
把25g含盐率为20%的盐水与100克含盐率为10%的盐水混合均匀，则混合后的盐水的含盐率为多少
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">25 * (1/5)</gadget>
<output>5</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">100 * (1/10)</gadget>
<output>10</output>

<gadget id="calculator">5 + 10</gadget>
<output>15</output>

<gadget id="calculator">25 + 100</gadget>
<output>125</output>

<gadget id="calculator">15 / 125</gadget>
<output>3/25 = around 0.12</output>

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

<gadget id="calculator">(3/25) * 1</gadget>
<output>3/25 = around 0.12</output>

<result>3/25 = around 0.12</result>