Xiao Ming walks 5 kilometers per hour, and rides a bicycle 18 kilometers faster than walking per hour. The speed of the car is three times that of the bicycle. How many kilometers per hour does the car travel?
小明步行，每小时行5千米，骑自行车每小时比步行快18千米，汽车的速度是自行车的3倍，汽车每小时行多少千米？
<gadget id="calculator">18 + 5</gadget>
<output>23</output>

<gadget id="calculator">23 * 3</gadget>
<output>69</output>

<result>69</result>