Dissolve 25 grams of salt in 100 grams of water to form brine, then the salt accounts for ((())/(())) of the brine.
把25克盐放在100克水中溶成盐水，那么盐占盐水的((())/(()))．
<gadget id="calculator">25 + 100</gadget>
<output>125</output>

<gadget id="calculator">25 / 125</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>