The driver, Uncle Wang, departs from Xiamen to Fuzhou to deliver goods. He travels 60 kilometers per hour for the first 3 hours, and 50 kilometers per hour for the next 2 hours. What is the average speed of Uncle Wang from Xiamen to Fuzhou?
司机王叔叔从厦门出发到福州送货，前3小时每小时行60千米，后2小时的速度是50千米/小时，王叔叔从厦门到福州的平均速度是多少？
<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>

<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">280 / 5</gadget>
<output>56</output>

<result>56</result>