How are these numbers calculated?

Big Games

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

Week of 11/21100.0*Libertadores100.0*Average seed
Internacional 1 Grêmio 0 -0.5
-0.1
Coritiba 1 Santos 0 +0.2
Corinthians 6 São Paulo 1 +0.2
+0.0
Atlético-MG 2 Goiás 2 +0.1
Week of 11/28100.0*Libertadores100.0*Average seed
São Paulo 3 Figueirense 2 -0.1
Fluminense 1 Internacional 1 Yes
Grêmio 2 Atlético-MG 1 +0.2
If winner is:HomeEmpateAway
Week of 12/6100.0*Libertadores100.0*Average seed
Atlético-MG vs Chapecoense-0.3+0.3+0.3
Joinville vs Grêmio-0.3-0.3+0.2

What If

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

100100100100100100100100100100100100100100100100100100100100
If finish:ChanceChance will finish season at seed
TPW-L-Ewins titleLibertadores1234567891011121314151617181920Serie BCount
681-0-0NoYes5050No23,942,246
65-66NoYes100No18,478,714*
Total:NoYes2872No42,420,960

* Row combines multiple less frequent records.

Points
Chance Will Win Championship