Consider a source computer (S) transmitting a file of size 10⁶ bits to a destination computer (D) over a network of two routers (R₁ and R₂) and three links (L₁, L₂, and L₃). L1 connects S to R₁ L₂ connects R₁ to R₂ and L₃ connects R₂ to D. Let each link be of length 100 km. Assume signals travel over each line at a speed of 10⁸ meters per second. Assume that the link bandwidth on each link is 1 Mbps. Let the file be broken down into 1000 packets each of size 1000 bits. Find the total sum of transmission and propagation delays in transmitting the file from S to D.