There are 10 grams of sugar in 90 grams of sugar water, and the mass of sugar is that of water ((())/(())).
在90克糖水中含有10克糖，糖的质量是水的((())/(()))．
<gadget id="calculator">90 - 10</gadget>
<output>80</output>

<gadget id="calculator">10 / 80</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>