How much is the parking lot in Huaihua RT Mart?

RT Mart parking lot in Huaihua charges 25 yuan for one day. The charging standard of Huaihua RT Mart parking lot is as follows: temporary parking is free within 30 minutes, and if it is less than 30 minutes, it will be charged at 1 hour in 2.5 yuan, with a maximum of 25 yuan per day, and parking can be free for 3 hours if shopping exceeds 88 yuan (inclusive) on that day. So the parking lot in Huaihua RT Mart is one hour in 2.5 yuan, one day in 25 yuan, 24 hours a day in 25 yuan and one day in 25 yuan.