It can be done. Periodically the US Congressional Budget Office puts our figures on the US armed forces. Here's an extract from the latest (2021) version.
| Surface Combatant | Total | Direct | Indirect | Overhead |
| Arleigh Burke Class Destroyer (DDG-51) | | | | |
| Military Personnel per Unit | 710 | 350 | 90 | 270 |
| Annual Cost per Unit (Millions of 2021 dollars) | 180 | 80 | 30 | 70 |
| Ticonderoga Class Cruiser (CG-47) | | | | |
| Military Personnel per Unit | 800 | 390 | 110 | 300 |
| Annual Cost per Unit (Millions of 2021 dollars) | 210 | 100 | 40 | 80 |
| Littoral Combat Ship | | | | |
| Military Personnel per Unit | 510 | 240 | 80 | 190 |
| Annual Cost per Unit (Millions of 2021 dollars) | 150 | 70 | 30 | 50 |
| Zumwalt Class Destroyer (DDG-1000) | | | | |
| Military Personnel per Unit | 510 | 240 | 80 | 190 |
| Annual Cost per Unit (Millions of 2021 dollars) | 230 | 130 | 50 | 50 |
| | | | |