One of the companies bought a land for the purpose of building a factory on it in the amount of 500,000,000 dinars, the old building was removed and the construction of a new factory and the costs borne by the company were as follows: 4 million costs of demolishing the building, 10 million wages of engineering fees, 2 million land registration fees, 500,000,000 building costs of the factory, 1 million collections from the sale The ruins of the old building. 

Required: 

Determine the cost of the land and the cost of the factory building.