How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Average seed
Grêmio 3 América-MG 0 +1.3
Corinthians 1 Internacional 0 -0.2
Atlético-PR 2 Sport Recife 0 -0.1
Chapecoense 2 São Paulo 0 -0.1
Palmeiras 1 Botafogo 0 +0.1
Cruzeiro 2 Santos 2 +0.1
Ponte Preta 1 Fluminense 0 +0.1
Flamengo 2 Coritiba 2 +0.1
Week of 11/26100.0*Average seed
Santa Cruz 5 Grêmio 1 -0.8
Palmeiras 1 Chapecoense 0 +0.2
Figueirense 1 Fluminense 0 +0.1
Internacional 1 Cruzeiro 0 +0.0
Botafogo 1 Ponte Preta 1 -0.0
If winner is:HomeEmpateAway
Week of 12/4100.0*Average seed
Grêmio vs Botafogo+0.6-0.2-0.5
Chapecoense vs Atlético-MG-0.4+0.2+0.2
Cruzeiro vs Corinthians+0.2-0.1-0.2
Ponte Preta vs Coritiba-0.2+0.1+0.1

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
561-0-0NoNo4357No5,847,801
540-0-1NoNo6238No3,732,128
530-1-0NoNo394714No5,846,791
Total:NoNo1651275No15,426,720
Points
Chance Will Win Championship