A car goes from place A to place B. It goes downhill a lot on the way there, travels an average of 80 kilometers per hour, and takes 6 hours to get there. When it comes back, it goes uphill a lot, and it takes 8 hours to get there. How many kilometers per hour did you travel on average when you came back?
汽车从甲地去乙地，去的时候下坡多，平均每小时行80千米，用了6小时到达，回来时上坡多，用了8小时才到．回来时平均每小时行多少千米？
<gadget id="calculator">6 / 8</gadget>
<output>3/4 = around 0.75</output>

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

<result>60</result>