Listing Files - Permissions in Octal?

[ms419@freezone.co.uk]

How can I generate a directory listing, including permissions 
represented in octal, instead of "r", "w", & "x"?

I frequently use "ls -l" to list files, including their permissions, 
but I thought sometimes it would be nice to list these in terms of 
their octal values.

I couldn't find any hints in "man ls", or google. Does anyone here know 
how it's done?

Sorry for asking such a general question - I'd be happy to ask 
elsewhere if someone knows a more appropriate list.

Thanks!

Jack