Question: On Router1, the users should be able to see the *number of packets and bytes IP packets in *transit* outbound interfaces to/from vlan 1 switched through router.  Statistics should be broken down based on destination and source IP address.

Final configuration:
R1:

interface fast0/0
  ip accounting output-packets

Verification:

On R1 ping any reachable host via this router.

R1#ping 172.20.0.6 

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.20.0.6, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms

Show to know:

R5#sho ip accounting
   Source           Destination              Packets               Bytes
 172.20.0.3       172.20.0.4                     386               46616
 172.16.107.1     232.19.19.19                   360               36000

Accounting data age is 11
R5#sho ip accounting
   Source           Destination              Packets               Bytes
 172.20.0.3       172.20.0.4                     439               53044
 172.16.107.1     232.19.19.19                   410               41000

Accounting data age is 13