Put 12 grams of salt into 100 grams of water, the salt accounts for ((())/(())).
把12克盐放入100克水中，盐占盐水的((())/(()))．
<gadget id="calculator">12 + 100</gadget>
<output>112</output>

<gadget id="calculator">12 / 112</gadget>
<output>3/28 = around 0.107143</output>

<result>3/28 = around 0.107143</result>