What is the concentration of sugar water after mixing 100 grams of 25% sugar water with 300 grams of 10% sugar water?
将100克25%的糖水与300克10%的糖水混合后，糖水的浓度是多少？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">100 * (1/4)</gadget>
<output>25</output>

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

<gadget id="calculator">300 * (1/10)</gadget>
<output>30</output>

<gadget id="calculator">25 + 30</gadget>
<output>55</output>

<gadget id="calculator">100 + 300</gadget>
<output>400</output>

<gadget id="calculator">55 / 400</gadget>
<output>11/80 = around 0.1375</output>

<result>11/80 = around 0.1375</result>