How to calculate Jinan housing maintenance fund

In July this year 1 a new policy was introduced. If someone has paid the maintenance fund of the building before July 1, it will be paid according to 3% of the total house price. If not, the villa shall be paid by 20 yuan per square meter, 60 yuan per square meter for multi-storey buildings without elevators, and per square meter 120 yuan for those with elevators.