Hi Paul, thanks for your reply.
My friend has gotten his movement records, which only show the dates he departed and arrived Australia, but not the number of days he has been staying. He counted manually, which has a total of 726 days (<730 days) if both departing and arriving date considered as 1 day, and 738 days if considered as 2 days.
As his permanent resident was expired few days ago, does this means he is ready to renew his RRV for another 5 years?