Zhang Liang's home is 3,600 meters away from the school. After school, he came home from school. At the same time, his mother came to pick up Zhang Liang from home on an electric bicycle. The two met after 12 minutes. It is known that the speed ratio of Zhang Liang and his mother is 1:4, how many meters does Zhang Liang travel per minute?
张亮家离学校3600米，放学后他从学校回家，同时他妈妈从家骑电动车来接张亮，12分钟后两人相遇．已知张亮和妈妈的速度比是1：4，张亮每分钟行多少米？
<gadget id="calculator">1 + 4</gadget>
<output>5</output>

<gadget id="calculator">3_600 / 12 / 5</gadget>
<output>60</output>

<result>60</result>