How to charge for parking in Shiyan Hongfa Industrial Park?

The parking fees of Shiyan Hongfa Industrial Park are as follows. Parking for three hours is free. If it takes more than three hours, it will be collected according to the first hour. For example, if you park for four hours, you will be charged five yuan. The charging standard is 5 yuan for the first hour, and 1 yuan will be added for each additional hour. Working days: 7: 30-20: 00, 65438+ first half hour in 0.2 yuan, 0.5-3 hours in 2.4 yuan every half hour, and then 3 hours in 4 yuan. Non-working days 10: 00-20: 00, half an hour in 0.6 yuan, 0.5-3 hours in 0.9 yuan, and every half an hour after 3 hours 1.5 yuan.