Divide the 3-meter-long ribbon evenly among 12 people, each person gets the full length ((())/(())), how many meters each person gets.
把3米长的彩带平均分给12人，每人分得全长的((())/(()))，每人分得多少米．
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">3 * (1/12)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>