After mixing 500 grams of 20% sugar solution and 300 grams of 10% sugar solution, pour out 100 grams and add 300 grams of water. What is the concentration of the new sugar solution?
将500克浓度为20%的糖水溶液和300克浓度为10%的糖水溶液混合后，倒出100克，再加入300克水，新的糖水溶液的浓度是多少？
<gadget id="calculator">800 - 100</gadget>
<output>700</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">500 * (1/5)</gadget>
<output>100</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">100 + 30</gadget>
<output>130</output>

<gadget id="calculator">500 + 300</gadget>
<output>800</output>

<gadget id="calculator">130 / 800</gadget>
<output>13/80 = around 0.1625</output>

<gadget id="calculator">700 + 300</gadget>
<output>1_000</output>

<gadget id="calculator">(13/80) / 1_000</gadget>
<output>13/80_000 = around 0.000162</output>

<gadget id="calculator">700 * (13/80_000)</gadget>
<output>91/800 = around 0.11375</output>

<result>91/800 = around 0.11375</result>