A car drives from city A to city B at a speed of 80 km/h, arrives at 6 o'clock, and returns at 8 o'clock, what is the speed when returning?
一辆汽车从甲城开往乙城，去时的速度是80千米/时，6时到达，返回时用了8时，返回时的速度是多少？
<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>