In a brine, the salt is less than water (8/9), what is the salt content of this brine
一种盐水中，盐比水少(8/9)，这种盐水的含盐率是多少
<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">1 - (8/9)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 + (1/9)</gadget>
<output>10/9 = around 1.111111</output>

<gadget id="calculator">(1/9) / (10/9)</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>