Yes this is possible.
For Port address translation you can use :
1.) SRC Port 9080 to DST port 9080
2.) Or you can also use the SRC Port 80 to DST Port 9080
Example of option 2:
access-list acl_outside permit tcp any host PublicIP eq http
access-group acl_outside in interface outside
static (inside,outside) tcp PublicIP http IntenalIP 9080 netmask 255.255.255.255
Replace the PublicIP and the InternalIP by the RealIP Address.
sincerely
Patrick