10 grams of sugar dissolved in 50 grams of water, how much less sugar than water
10克糖溶解在50克水中，糖比水少多少
<gadget id="calculator">50 - 10</gadget>
<output>40</output>

<gadget id="calculator">40 / 50</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>