Xiao Ming walks from home to school for 30 minutes. If he rides a bicycle to travel 210 meters per minute, it takes 8 minutes. How many meters does Xiao Ming walk per minute?
小明从家到学校步行要30分钟，如果骑自行车每分钟行210米，要8分钟，小明每分钟步行多少米？
<gadget id="calculator">8 / 30</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">210 * (4/15)</gadget>
<output>56</output>

<result>56</result>