Calculating difference between dates in SQL

hello, 

I have been experimenting with interactive SQL to try to formulate a
statment for later use.

What I need to do is calculate an age for a client . The client master
contains the birth date in numeric form 8,0.

My statement, culled from various books and articles looks like this:

SELECT                                       
days(current date) - days(date(hhdob))       
"Age" , 
hhdob, hhnaml, hhnamf,               
  hhcase FROM ClientMaster

The result always seems to look like this:

        "Age"   BIRTH YYYYMMDD            case           
++++++++++++++    19,820,926                 4         
++++++++++++++    19,820,924                 5         
++++++++++++++    19,840,909                 6         
++++++++++++++    19,820,915                 7         
++++++++++++++    19,820,806                 8         
++++++++++++++    19,810,108                 9         
++++++++++++++    19,820,330                10   

From reading it seems like age should be a number, why can't I see it?

Thanks in Advance for any help, 

Dave Boettcher