kind of salt water, if salt accounts for 12% of the mass of the salt water, then how much water accounts for the mass of the salt water.
一种盐水，如果盐占盐水质量的12%，那么水占盐水质量的多少．
<gadget id="calculator">12 / 100</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">1 - (3/25)</gadget>
<output>22/25 = around 0.88</output>

<result>22/25 = around 0.88</result>