Dissolve 20g of sugar in 80g of water, what is the percentage of sugar in the sugar water
把20g糖溶于80g水中，糖占糖水的多少
<gadget id="calculator">20 + 80</gadget>
<output>100</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

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