The distance between A and B is 375 kilometers. After a car drives for 3 hours, the remaining distance is 15 kilometers longer than the distance traveled. How many kilometers does this car drive on average per hour?
甲乙两地相距375千米，一辆汽车行驶3小时后，剩下的路程比已行的路程还多15千米，这辆汽车平均每小时行驶多少千米？
<gadget id="calculator">375 - 15</gadget>
<output>360</output>

<gadget id="calculator">360 / 2 / 3</gadget>
<output>60</output>

<result>60</result>