Add 6 grams of salt and 14 grams of water to 30% salt water, what is the percentage of salt in the salt water?
在含盐30%的盐水中，加入6克盐14克水，这时盐水含盐百分比是等于多少
<gadget id="calculator">6 + 14</gadget>
<output>20</output>

<gadget id="calculator">6 / 20</gadget>
<output>3/10 = around 0.3</output>

<result>3/10 = around 0.3</result>