How are these numbers calculated?

Big Games

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

Week of 11/22100.0*Libertadores100.0*Average seed
Corinthians 1 Grêmio 0 -16.3
-0.5
Internacional 2 Atlético-MG 1 -2.1
-0.1
Santos 0 São Paulo 1 -0.3
Sport Recife 2 Fluminense 2 +0.2
+0.0
Week of 11/29100.0*Libertadores100.0*Average seed
Internacional 3 Palmeiras 1 -4.8
-0.1
Fluminense 5 Corinthians 2 +0.8
-0.1
Bahia 1 Grêmio 0 No
-0.3
Atlético-MG 1 Coritiba 2 +0.2
+0.3
If winner is:HomeEmpateAway
Week of 12/6100.0*Libertadores100.0*Average seed
Grêmio vs Flamengo+0.6-0.6-0.8
Botafogo vs Atlético-MG+0.3+0.2-0.3
Cruzeiro vs Fluminense+0.1+0.1-0.5

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
631-0-0NoNo48457No22,748,605
610-0-1NoNo11980No11,710,929
600-1-0NoNo100No7,961,426
Total:NoNo263044No42,420,960
Points
Chance Will Win Championship