Put 5 grams of salt into 245 grams of water, what percentage of the salt water?
把5克盐放入245克的水中，盐占盐水的几分之几？
<gadget id="calculator">5 + 245</gadget>
<output>250</output>

<gadget id="calculator">5 / 250</gadget>
<output>1/50 = around 0.02</output>

<result>1/50 = around 0.02</result>