The ratio of salt to water is 3:17, how much salt accounts for the brine.
盐和水的比是3：17，盐占盐水的多少．
<gadget id="calculator">3 + 17</gadget>
<output>20</output>

<gadget id="calculator">3 / 20</gadget>
<output>3/20 = around 0.15</output>

<result>3/20 = around 0.15</result>