It took Xiao Ming 4 hours to go to the Children's Palace by electric bike, and every time Xiao Ming traveled 60 kilometers, it only took 3 hours to return. How many kilometers did he travel on average per hour when he returned?
小明骑电动车去少年宫用了4小时，每小明行60千米，返回时只用了3小时，返回时平均每小时行多少千米？
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">60 * (4/3)</gadget>
<output>80</output>

<result>80</result>