It takes 9 days for Team A to complete a task alone. The work efficiency of team B is 75% of that of team A. How many days does it take for team B to do this work alone?
一项工作由甲队单独完成需要9天可以完成．乙队的工作效率是甲队的75%，乙队单独做这项工作需要多少天？
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/9) * (3/4)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 / (1/12)</gadget>
<output>12</output>

<result>12</result>