A passenger car and a freight car leave opposite directions at the same time from cities A and B, which are 476 kilometers apart, and they meet after 4 hours. The passenger car travels 85 kilometers per hour, how many kilometers per hour does the truck travel?
客车和货车同时从相距476千米的A、B两城市相向开出，经过4小时两车相遇．客车每小时行85千米，货车每小时行多少千米？
<gadget id="calculator">476 / 4</gadget>
<output>119</output>

<gadget id="calculator">119 - 85</gadget>
<output>34</output>

<result>34</result>