If 50 grams of salt is added to 200 grams of water, what is the salt content of the salt water?
在200克的水中加入50克的盐，盐水的含盐率是多少．
<gadget id="calculator">50 + 200</gadget>
<output>250</output>

<gadget id="calculator">50 / 250</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">(1/5) * 1</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>