A passenger car travels on the highway, and travels 136 kilometers in the first two hours, and travels 74 kilometers in the third hour. How many kilometers per hour does this bus travel on average?
一辆客车在公路上行驶，前两小时行了136千米，第三小时行了74千米．这辆客车平均每时行多少千米？
<gadget id="calculator">136 + 74</gadget>
<output>210</output>

<gadget id="calculator">210 / 3</gadget>
<output>70</output>

<result>70</result>