In 100 grams of sugar water, there are 80 grams of water, how much sugar accounts for the water
在100克糖水中，水有80克，糖占水的多少
<gadget id="calculator">100 - 80</gadget>
<output>20</output>

<gadget id="calculator">20 / 80</gadget>
<output>1/4 = around 0.25</output>

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