Add 50 grams of salt to 150 grams of water, how much does the salt account for in the brine?
在150克水中加入50克盐，这时盐占盐水的多少
<gadget id="calculator">150 + 50</gadget>
<output>200</output>

<gadget id="calculator">50 / 200</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>