car travels at a constant speed on the highway and travels 210 kilometers in 3 hours. What is the speed of the car?
一辆汽车在高速公路上匀速行驶，3小时行驶了210千米，这辆汽车的速度是多少．
<gadget id="calculator">210 / 3</gadget>
<output>70</output>

<result>70</result>