Suppose we need to connect a University Computer Network Research Lab (CNRL) network with address 156.78.0.0 through a router to University EE department network with address 123.0.0.0 and connect CNRL network through a router to University EE Research network with address 234.56.7.0. Please draw a diagram for this network connection. Choose IP addresses for each interface of each router and show several hosts on each network with their IP addresses. Please explain your answer for each step