A rectangular park is 120 m long and 104 m wide. A 1-m wide path runs along the boundary of the park, remaining completely inside the park area. Thus, the outside edges of the path run along the boundary wall of the park. The inside edges of the path are marked with a white line of negligible thickness. If it costs Rs. 2.50 to mark each metre with the white line, then how much would it cost (in Rs.) to fully mark the inside edges of the path?