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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_unit_primitive_area(self):
 """ Returns the surface area of the adsorbed system per unit area of the primitive slab system. """


        A_ads = self.surface_area
        A_clean = self.clean_entry.surface_area
        n = (A_ads / A_clean)
        return n