There are 5 grams of salt and 100 grams of water in brine, plus 2 grams of salt, the salt accounts for ((())/(())) of the brine.
盐水中有5克盐和100克水，再加上2克盐，盐占盐水的((())/(()))．
<gadget id="calculator">5 + 2</gadget>
<output>7</output>

<gadget id="calculator">5 + 100 + 2</gadget>
<output>107</output>

<gadget id="calculator">7 / 107</gadget>
<output>7/107 = around 0.065421</output>

<result>7/107 = around 0.065421</result>