The total length of the Shanghai-Nanjing Expressway is 274 kilometers. A passenger car departs from Shanghai and travels at a speed of 95 km/h for a period of time, and it is still 84 kilometers away from Nanjing. How many hours has the bus been driving? (solution by equation)
沪宁高速公路全长274千米．一辆客车从上海出发，以95千米/时的速度行驶一段时间后，离南京还有84千米．这辆客车已经行驶了多少小时？(用方程解)
<gadget id="calculator">274 - 84</gadget>
<output>190</output>

<gadget id="calculator">190 / 95</gadget>
<output>2</output>

<result>2</result>