Uncle Wang drove to Ji County for a trip. He originally planned to drive 120 kilometers per hour and arrive in 2 hours. However, due to the traffic jam, he arrived 1 hour late. How many kilometers per hour did Uncle Wang actually drive?
王叔叔开车去蓟县旅游，原计划每小时行120千米，2小时到达，但是由于堵车晚到了1小时，王叔叔实际每小时行多少千米？
<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">120 * (2/3)</gadget>
<output>80</output>

<result>80</result>