The distance between A and B is 302 kilometers. A bus travels from A to B at 80 kilometers per hour. It has been driven for 2.5 hours. The rest of the journey is required to reach B within 1.2 hours. What is the average value of the bus for the remaining distance? How many kilometers per hour?
甲乙两地相距302千米，一辆客车从甲地开往乙地，每小时行驶80千米，已经行驶了2.5小时，余下的路程要求在1.2小时内到达乙地，请问余下的路程客车平均每小时行驶多少千米？
<gadget id="calculator">80 * 2.5</gadget>
<output>200</output>

<gadget id="calculator">302 - 200</gadget>
<output>102</output>

<gadget id="calculator">102 / 1.2</gadget>
<output>85</output>

<result>85</result>