In salt water with a salinity rate of 5%, what is the percentage of salt in the water?
在含盐率为5%的盐水中，盐占水的多少
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">(1/20) / (19/20)</gadget>
<output>1/19 = around 0.052632</output>

<result>1/19 = around 0.052632</result>