There was a mathematics competition, the number of people who failed was 1/9 of the number of people who passed, what is the passing rate?
有一次数学竞赛，不及格人数是及格人数的(1/9)，及格率是多少．
<gadget id="calculator">1 + 9</gadget>
<output>10</output>

<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(9/10) * 1</gadget>
<output>9/10 = around 0.9</output>

<result>9/10 = around 0.9</result>