Where are my IT/Networking peeps?!?

[20X11]

I don't understand how you're given the address space 145.36.0.0/22 and you end up with a first available IP of 145.36.4.1/22

145.36.0.0/22 breaks down as:
Network address: 145.36.0.0/22, granted you don't live in like 1998 or some shit and "ip subnet zero" isn't an option on your Cisco.
Host addresses: 145.36.0.1-145.36.3.254
Broadcast address: 145.36.3.255

145.36.4.1 isn't even a valid address in the address space 145.36.0.0/22.

^^^^This Classless Inter Domain Routing (CIDR)as evidenced by the /22 requires that you break the 4 octets into their respective binary representations and work from the on the 10th binary position from the right (32-22). Since there are only 2 binary positions in the 3rd octet the highest range is xxx.xxx.3.254


EDIT: and technically since this is using CIDR it is NOT a class B address