Add 20 grams of salt to 200 grams of water, what is the percentage of salt in the salt water? (fill in the score)
在200克水中加入20克盐，盐占盐水的多少．(填分数)
<gadget id="calculator">200 + 20</gadget>
<output>220</output>

<gadget id="calculator">20 / 220</gadget>
<output>1/11 = around 0.090909</output>

<result>1/11 = around 0.090909</result>