How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Libertadores*100.0*Average seed
Inter 0 Corinthians 2 +2.2
+1.1
Sao Paulo 2 Nautico 1 No
Sport 2 Botafogo 0 +0.1
+0.1
Week of 11/25100.0*Libertadores*100.0*Average seed
Botafogo 2 Atletico-MG 3 +0.3
Week of 12/1100.0*Libertadores*100.0*Average seed
Fluminense 1 Vasco 2 -0.7
Flamengo 2 Botafogo 2 +0.1
Sao Paulo 3 Corinthians 1 -0.0
Points
Chance Will Win Championship