How are these numbers calculated?

Big Games

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

Week of 4/21100.0*Promoted100.0*Average seed
Sheff Wed 2 Carlisle 1 +4.6
+0.1
MK Dons 1 Sheff United 0 +4.5
+0.1
Week of 4/28100.0*Promoted100.0*Average seed
Brentford 1 Sheff Wed 2 +19.8
+0.3
Sheff United 2 Stevenage 2 +15.0
+0.2
Week of 5/5100.0*Promoted100.0*Average seed
Sheff Wed 2 Wycombe 0 Yes
+0.3
Exeter City 2 Sheff United 2 +9.4
+0.1
Points
Chance Will Win Championship