The parking lot for a car stipulates that each car parks once and pays at least 2 yuan; if it exceeds 1 hour, it needs to pay 0.8 yuan for each additional hour. A car paid 5.2 yuan when it left the parking lot. How many hours has the car been parked?
一辆汽车停车场规定：每辆汽车停一次，至少交费2元；如果超过1小时，每多停1小时要再交0.8元．一辆汽车离开停车场时交了5.2元，这辆汽车停了几小时？
<gadget id="calculator">5.2 - 2</gadget>
<output>3.2</output>

<gadget id="calculator">3.2 / 0.8</gadget>
<output>4</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<result>5</result>