Creating hashed and reading hashed passwords

I have taken over management of a server used as RAS/Radius server for a local company. The are using freeradius (with which I am not familiar) , my basic task is mainly focused on adding entries into the file : /etc/freeradius/users. Some of these entries are hashed/encrypted , example : someuser        Password == "AA83594805E8"  Service-Type = Framed-User,  Port-Limit = 2,  Framed-Protocol = PPP I have no idea how they got the "encrypted" hashed password and how to convert the has to clear text so I can give users their actual password. Is there a command in freeradius the previous admin uses for this (or how was this created) ? Any advice , assistance would be greatly appreciated.