The speed of a passenger car on the expressway is 82 km/h, and the speed on the ordinary road is 58 km/h. The passenger car travels on the expressway and the ordinary road for 3 hours each. How many kilometers has the bus traveled in total?
一辆客车在高速路上的速度是82千米/时，在普通路上的速度是58千米/时，这辆客车在高速路和普通路上各行了3小时．这辆客车共行驶了多少千米？
<gadget id="calculator">82 * 3</gadget>
<output>246</output>

<gadget id="calculator">58 * 3</gadget>
<output>174</output>

<gadget id="calculator">246 + 174</gadget>
<output>420</output>

<result>420</result>