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 +6.0
Shrewsbury Town 2 Oxford United 3 -2.9
Accrington Stan 1 Charlton Athletic 1 +1.0
Northampton Town 0 Blackpool 3 -0.3
Plymouth Argyle 1 Sunderland 3 -0.1
Fleetwood Town 1 Milton Keynes D 1 +0.0
If winner is:HomeDrawAway
Charlton Athletic vs Lincoln City-1.2+0.4+0.8
Blackpool vs Doncaster Rovers-0.1-0.0+0.1
If winner is:HomeDrawAway
Week of 5/8100.0*Promoted100.0*Average seed
Portsmouth vs Accrington Stan+9.3-3.9-9.8
Oxford United vs Burton Albion-4.7+0.5+7.0
Charlton Athletic vs Hull City-1.5+0.3+0.8
Blackpool vs Bristol Rovers-0.1+0.0+0.1

What If

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

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