Does that include 1Ls and 2Ls? If so, you need to double the number to 9000.
Also, it doesn't make sense to say guaranteed anyhow (even with a light reading of 'guaranteed'). Since a no-offer to a summer is extremely rare, don't you think there wouldn't be people having to settle for non Vault jobs, or worse, not biglaw at all (keyword settle, as I know not everybody wants biglaw and wouldn't consider other stuff settling)?
Do you think there's a chance you double counted (even if not on purpose)?