For a magnetic field passing through a flat surface perpendicular to it, the magnetic flux through the surface is the product of the magnetic field's strength and the area of the surface. A certain flat surface consists of two adjacent circular loops. The area, in square meters, of the larger loop is 4 times the area, in square meters, of the smaller loop. A magnetic field with strength 15 Tesla passes uniformly through this surface, which is perpendicular to the magnetic field. If the total magnetic flux of the magnetic field through this surface is 1,500 Weber, what is the magnetic flux, in Weber, of the magnetic field through the smaller loop?