The total length of the Shanghai-Nanjing Expressway is 274 kilometers. A truck departs from Nanjing and drives to Shanghai along the Shanghai-Nanjing Expressway. It will be 94 kilometers away from Shanghai in 2 hours. How many kilometers does this truck travel on average per hour?
沪宁高速公路全长274千米，一辆卡车从南京出发沿沪宁高速开往上海，2小时后离上海还有94千米，这辆卡车平均每小时行多少千米？
<gadget id="calculator">274 - 94</gadget>
<output>180</output>

<gadget id="calculator">180 / 2</gadget>
<output>90</output>

<result>90</result>