If 10 grams of salt is completely dissolved in 80 grams of water, what is the proportion of salt in the salt water?
如果把10克盐完全溶解在80克水中，那么这时盐占盐水的多少．
<gadget id="calculator">10 + 80</gadget>
<output>90</output>

<gadget id="calculator">10 / 90</gadget>
<output>1/9 = around 0.111111</output>

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