There are 200 grams of sugar water with 40% sugar content, and then add 300 grams of water, what percentage is the sugar content at this time?
有含糖40%的糖水200克，再加进300克的水，这时的含糖率是百分之几？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">200 * (2/5)</gadget>
<output>80</output>

<gadget id="calculator">200 + 300</gadget>
<output>500</output>

<gadget id="calculator">80 / 500</gadget>
<output>4/25 = around 0.16</output>

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

<gadget id="calculator">(4/25) * 1</gadget>
<output>4/25 = around 0.16</output>

<result>4/25 = around 0.16</result>