A car travels at a constant speed on the highway, and it takes 2 hours for 180 kilometers. What is the speed of this car?
一辆小轿车在高速公路上匀速行驶，180千米用了2小时，这辆小轿车的速度可以记作多少．
<gadget id="calculator">180 / 2</gadget>
<output>90</output>

<result>90</result>