How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 5/1100.0*Promoted100.0*Average seed
AFC Wimbledon 1 Portsmouth 3 No
Burton Albion 1 Gillingham 1 No
Shrewsbury Town 2 Oxford United 3 No
Accrington Stan 1 Charlton Athletic 1 +0.0
Fleetwood Town 1 Milton Keynes D 1 +0.1
Swindon Town 1 Ipswich Town 2 -0.2
Rochdale 1 Doncaster Rovers 2 -0.2
Bristol Rovers 0 Crewe Alexandra 1 -0.1
If winner is:HomeDrawAway
Blackpool vs Doncaster Rovers+0.2-0.0-0.3
Shrewsbury Town vs Ipswich Town+0.2+0.1-0.2
If winner is:HomeDrawAway
Week of 5/8100.0*Promoted100.0*Average seed
Gillingham vs Plymouth Argyle+1.1-0.5-1.3
Portsmouth vs Accrington Stan+0.2-0.0-0.3
Milton Keynes D vs Rochdale-0.2+0.2+0.3
Crewe Alexandra vs Shrewsbury Town-0.3+0.2+0.3
Doncaster Rovers vs Peterborough Un-0.3-0.1+0.2
Ipswich Town vs Fleetwood Town-0.2+0.1+0.2

What If

Chances based on how well the Gillingham finish out the regular season.   Explain

If finish:ChanceChance will finish season at seed
TPW-D-Lwins titlePromoted123456789101112131415161718192021222324RelegatedCount
Chance Will Win Championship