The driver, Uncle Wang, set off from Xiamen to Fuzhou to deliver goods. The speed in the first 3 hours was 60 km/h, and the speed in the next 2 hours was 50 km/h. How many kilometers did Uncle Wang drive in total?
司机王叔叔从厦门出发到福州送货，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，王叔叔一共行驶了多少千米？
<gadget id="calculator">60 * 3</gadget>
<output>180</output>

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

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

<result>280</result>