A brine is prepared by mixing salt and water at a ratio of 1:20, where the mass of water accounts for the mass of the brine.
一种盐水是由盐和水按照1：20配制而成，其中水的质量占盐水质量的多少．
<gadget id="calculator">1 + 20</gadget>
<output>21</output>

<gadget id="calculator">20 / 21</gadget>
<output>20/21 = around 0.952381</output>

<result>20/21 = around 0.952381</result>