Put 20 grams of salt into 200 grams of water, what is the percentage of salt in the salt water?
把20克盐放到200克水中，这时盐占盐水的多少
<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>