Dad took Xiao Ming to his grandmother’s house during the summer vacation. He took the train for 3.6 hours. The speed of the train was 80 km/h. When he came back, he took the car for 2.4 hours. What is the speed of the car?
暑假爸爸带小明去外婆家玩，去的时候乘火车，全程用了3.6小时，火车的速度是80千米/小时，回来的时候是乘汽车，用了2.4小时，汽车的速度是多少？
<gadget id="calculator">3.6 / 2.4</gadget>
<output>1.5</output>

<gadget id="calculator">80 * 1.5</gadget>
<output>120</output>

<result>120</result>