Suppose we need to connect a network labeled ABCD with address 156.78.0.0 through a router to a computer science network with address 123.0.0.0 and connect network ABCD through a router to a computer science Research network with address 234.56.7.0.

Choose IP addresses for each interface of each router and show several hosts on each network with their IP addresses. Please draw a diagram for this network connection and explain the answer for each step.