Thanks for suggestions, have been very useful
I would select:
1. Pay for a network engineer.
2. Pay for new routers and make a more complex design for departments.
3.
> just specify your network to be bigger than that. For example
> 192.168.0.0-192.168.1.255 gives you 510 hosts
> 192.168.0.0/23
router-------PC with 2NICS--------Institute LAN
real IP 192.168.0.0-192.168.1.255
192.168.0.0/23
Is supernetting available this way or can be used only between routers?
Actually I am with the third, because of financial issues.