The two started from the school at the same time. After walking for 8 minutes, Xiao Gang was 416 meters away from the school, and Xiao Ming was 520 meters away from the school. How many meters did Xiao Ming travel more than Xiao Gang per minute?
两人同时从学校出发，步行8分钟后，小刚离学校416米，小明离学校520米，小明每分钟比小刚多行多少米？
<gadget id="calculator">520 - 416</gadget>
<output>104</output>

<gadget id="calculator">104 / 8</gadget>
<output>13</output>

<result>13</result>