A car travels a total of 490 kilometers from 8 am to 3 pm. How many kilometers per hour does the car travel on average?
一辆汽车从上午8时到下午3时共行驶490千米．这辆汽车平均每小时行驶多少千米？
<gadget id="calculator">15 - 8</gadget>
<output>7</output>

<gadget id="calculator">490 / 7</gadget>
<output>70</output>

<result>70</result>