SQL & PL/SQL

previously in my database the data have stored  as compressed.

now i want to retrieve the data into to number format;


 my select query like this:

  SELECT   RAWTOHEX(SUBSTR(DIRDEPINFO_001,37,6)) FROM DIRDEPDETL WHERE VENDOR = 12345;

result is:

RAWTOHEX(SUBSTR(DIRDEPINFO_001,37,6)) 
------------------------------------- 
00000050000C 

now i wan to convert to number format??/