Xiao Ming's home is about 2520 meters away from the school. After school, he left school to go home. At the same time, his father came to pick up Xiaoming by bicycle from home. The two met after 12 minutes. It is known that the speed ratio of Xiao Ming and Dad is 2:5. How many meters does Xiao Ming walk per minute?
小明家离学校大约2520米．放学后他离校回家，同时他爸爸从家骑自行车来接小明，12分钟后两人相遇．已知小明和爸爸速度之比是2：5．小明每分种的走多少米？
<gadget id="calculator">2_520 / 12</gadget>
<output>210</output>

<gadget id="calculator">2 + 5</gadget>
<output>7</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">210 * (2/7)</gadget>
<output>60</output>

<result>60</result>