Need help deciphering GM repair invoice

I have an '04 1500 Express van with the V6. 4700 miles on it. I
noticed some oil drops under it so I took it in for warranty service.
They replaced the hydroboost, timing cover gasket and oil pan gasket.
The repair invoice shows the following...
FP# Description
15814983 Booster 4.805 Z5001
9345880 Cover 0.206
3754587 Gasket 1.079
10220906 Gasket 1.429

Can anyone tell me what those numbers mean? Are those numbers after
the item description the man hours to R&R?

Those cannot be the book times too low for the ft cover and pan gaskets, also no one carries out the time to the 3rd place, looks like may be parts groups, what does the shop say, does the labor/hour and totals compute to thes figures?

Max,
That was transcribed directly off the repair order. I'd post a scan if I could figure out how.

Look at the info I sent back in the other unmoderated group.