Dissolve 50 grams of sugar in 400 grams of water, what percentage of the sugar is in the sugar water?
把50克糖溶解在400克水里，糖占糖水的几分之几？
<gadget id="calculator">400 + 50</gadget>
<output>450</output>

<gadget id="calculator">50 / 450</gadget>
<output>1/9 = around 0.111111</output>

<result>1/9 = around 0.111111</result>