A car travels a total of 336 kilometers from 9:00 am to 3:00 pm. How many kilometers per hour does the car travel on average?
一辆汽车从上午9时到下午3时，一共行驶336千米，这辆汽车平均每小时行驶多少千米？
<gadget id="calculator">15 - 9</gadget>
<output>6</output>

<gadget id="calculator">336 / 6</gadget>
<output>56</output>

<result>56</result>