How to calculate the property fee for illegally entering the property?

According to the contract, the owner should pay the property management fee according to the property service contract from the month after the delivery of the house. The area on the real estate license multiplied by the unit price of the property management fee multiplied by 12 months is the property management fee for one year. The word "property" was translated from English property or estate, and was introduced into coastal areas and inland areas from Hong Kong, meaning property, assets, real estate, real estate, industry and so on.