The total length of the Shanghai-Nanjing Expressway is about 274 kilometers. A passenger car has traveled 80 kilometers. The rest of the journey is planned to be completed in 2 hours. How many kilometers does it take on average per hour?
沪宁高速公路全长约274千米，一辆客车已经行驶了80千米，余下的路程计划2小时行完，平均每小时要行多少千米？
<gadget id="calculator">274 - 80</gadget>
<output>194</output>

<gadget id="calculator">194 / 2</gadget>
<output>97</output>

<result>97</result>