The distance between Xiaojie’s house and the school is 1200 meters, and the distance between the school and the stadium is 2 kilometers. It takes Xiaojie 9 minutes to walk from home to school in the morning. If he walks to the stadium at the same speed after school in the afternoon, how many minutes will it take?
小杰家离学校的距离为1200米，学校到体育场的距离为2千米．小杰早晨从家步行到学校需要9分钟，如果下午放学后他用同样的速度步行去体育场，需要多少分钟？
<gadget id="calculator">1_200 / 9</gadget>
<output>400/3 = around 133.333333</output>

<gadget id="calculator">2_000 / (400/3)</gadget>
<output>15</output>

<result>15</result>