No You can’t do that !!!
If you need to route some network through the 2nd Gateway you need to add exlicit routes.
Like
route add -net 172.16.200.0 netmask 255.255.255.0 192.168.180.254
Would explicitly routetraffic for the 172.16.200.n network through the eth0 adapter and then through the .254 gateway…
Read this about IP gateways & routers…