A car goes to the provincial capital with a speed of 60 km/h for the first 3 hours and a speed of 50 km/h for the next 2 hours. How many kilometers has the car traveled in total?
一辆汽车去省城，前3小时的速度是60千米/小时，后2小时的速度是50千米/小时，这辆汽车一共行驶了多少千米？
<gadget id="calculator">3 * 60</gadget>
<output>180</output>

<gadget id="calculator">2 * 50</gadget>
<output>100</output>

<gadget id="calculator">180 + 100</gadget>
<output>280</output>

<result>280</result>