For an electric field passing through a flat surface perpendicular to it, the electric flux of the electric field through the surface is the product of the electric field's strength and the area of the surface. A certain flat surface consists of two adjacent squares, where the side length, in meters, of the larger square is 2 times the side length, in meters, of the smaller square. An electric field with strength $15.00$ volts per meter passes uniformly through this surface, which is perpendicular to the electric field. If the total electric flux of the electric field through this surface is $1,500$ volts $\cdot$ meters, what is the electric flux, in volts $\cdot$ meters, of the electric field through the larger square?