Add 5 grams of salt and 20 grams of water to 20% salt water, what is the salt content of the resulting salt water?
在含盐20%的盐水中，再加入5克盐和20克水，混合后得到的盐水的含盐率等于多少
<gadget id="calculator">5 + 20</gadget>
<output>25</output>

<gadget id="calculator">5 / 25</gadget>
<output>1/5 = around 0.2</output>

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