Need to create packet tracer file, I have done the IP address and all is left is just to create nd connect them, I always struggle with it

Topology 1900 Hosts DCE R1 I 4000 Hosts Part 2 - Class B VLSM 16000 Hosts, M R3 8000 Hosts DCE Fig. 2 DCE R2 1000 Hosts Address 172.15.128.0/17 450 Hosts Scenario In this lab, use the 172.15.128.0/17 network address to develop an address scheme for the network displayed in Fig. 2. VLSM is used to meet the IPv4 addressing requirements. After you have designed the VLSM address scheme, you will configure the interfaces on the routers with the appropriate IP address information. Procedure Step1: Calculate the subnet information for Fig. 2 and fill the below table Subnet Description R3 G0/0 R3 G0/1 R1 G0/1 R1 G0/0 R2 G0/1 R2 G0/0 R3 S0/0/0 - R1 S0/0/1 R3 S0/0/1 - R2 S0/0/1 R1 S0/0/1 R2 S0/0/0 Number of Hosts Needed 16,000 8,000 4,000 1,900 1,000 450 2 2 2 Network Address First Host Address Broadcast Address /CIDR 172.15.128.0/18 172.15.128.1 172.15.191.255 172.15.192.0/19 172.15.192.1 172.15.223.255 172.15.224.0/20 172.15.224.1 172.15.231.255 172.15.240.0/21 172.15.240.1 172.15.235.255 172.15.248.0/22 172.15.248.1 172.15.137.255 172.15.252.0/23 172.15.252.1 172.15.253.255 172.15.254.0/32 172.15.254.1 172.15.254.3 172.15.254.4/30 172.15.254.5 172.15.254.7 172.15.254.8/30 172.15.254.9 172.15.254.11 Step2: 1. Connect Fig. 2 on packet Tracer connecting one PC (host) to each network 2. For each network; assign lowest IP address from range to router's interface and highest to host 3. For serial links; lowest address goes to DCE and highest to DTE; clock rate = 128000 4. 5. Assign device names to all routers Disable DNS lookup to prevent the router from attempting to to translate incorrectly entered commands as though they were hostnames. 6. For R3 router a. Assign class as the privileged EXEC encrypted password. b. Assign cisco as the console password and enable login. c. Assign cisco as the VTY password and enable login. d. Encrypt the clear text passwords. e. Create a banner that will warn anyone accessing the device that unauthorized access is prohibited. 7. Save the configurations on all devices 8. Test connectivity between all devices