Consider sending a data file of size F =2Mbits with packet switching from A to B through one intermediate router. Suppose the packet size is P =1Kbit, ignore packet headers. The link from A to the router is d1= 25 kilometers long and has a transmission rate of R1=10 Mbit/sec. The link from the router to B is d2=2500 kilometers long and has a transmission rate of R2=1 Mbit/sec. Ignore processing delays. Also, ignore cross traffic, i.e., the packets are not competing with other packet flows at the router. The propagation speed is s=2.5*108 m/sec. What is the delay (dtotal) in getting the file from A to B in terms of the given parameters F, P, R1, R2, d1, d2, and s?