Xiaojun's home is 540 meters away from the school and 900 meters away from the Children's Palace. It takes him 9 minutes to walk from home to school. At this speed, how many minutes would it take him to walk from home to the Children's Palace?
小军家离学校有540米，离少年宫900米．他从家走到学校要9分钟．照这样的速度，他从家走到少年宫要多少分钟？
<gadget id="calculator">540 / 9</gadget>
<output>60</output>

<gadget id="calculator">900 / 60</gadget>
<output>15</output>

<result>15</result>