How are these numbers calculated?

Big Games

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

Week of 5/14100.0*Average seed
Fiorentina 3 Lazio 2 +0.5
Internazionale 1 Sassuolo 2 +0.2
Atalanta 1 Milan 1 -0.0
Week of 5/21100.0*Average seed
Milan 3 Bologna 0 -0.2
Napoli 4 Fiorentina 1 -0.2
Lazio 1 Internazionale 3 -0.2
Week of 5/28100.0*Average seed
Fiorentina 2 Pescara 2 -0.2
Internazionale 5 Udinese 2 -0.2
Points
Chance Will Win Championship