Xiaohong walked an average of 60 meters per minute from home to school, and walked for 15 minutes. If she walks an average of 75 meters per minute when she comes back, how long will it take Xiaohong to get home?
小红从家到学校平均每分钟走60米，走了15分钟．如果回来的时候平均每分钟走75米，小红要多少分钟到家？
<gadget id="calculator">60 * 15</gadget>
<output>900</output>

<gadget id="calculator">900 / 75</gadget>
<output>12</output>

<result>12</result>