For a car parked in a paid parking lot, you need to pay 2 yuan for the first hour, and 1 yuan for every hour thereafter (less than 1 hour, it will be calculated as 1 hour). The owner of the car pays 5 yuan, how many hours can his car be parked at most?
收费停车场停放的汽车，第一小时需要付款2元，以后每小时付款1元，(不足1小时，按1小时计算)．车主付了5元钱，他的汽车最多能停放几小时？
<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">3 / 1</gadget>
<output>3</output>

<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<result>4</result>