A highway is 60 kilometers long, and it takes Xiao Ming 8 hours to ride a bicycle to and fro. How many kilometers can Xiao Ming ride on average per hour?
一条公路全长60千米，小明骑自行车往返全程一次用了8小时，小明平均每小时能骑多少千米？
<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">60 * (1/4)</gadget>
<output>15</output>

<result>15</result>