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
Chapecoense 2 São Paulo 0 +1.3
Grêmio 3 América-MG 0 -0.1
Corinthians 1 Internacional 0 -0.1
Cruzeiro 2 Santos 2 +0.0
Ponte Preta 1 Fluminense 0 -0.0
Week of 11/26100.0*Average seed
Palmeiras 1 Chapecoense 0 -0.7
Figueirense 1 Fluminense 0 +0.2
Santa Cruz 5 Grêmio 1 +0.2
Internacional 1 Cruzeiro 0 +0.1
Atlético-MG 1 São Paulo 2 -0.1
Botafogo 1 Ponte Preta 1 +0.1
Corinthians 0 Atlético-PR 0 -0.0
If winner is:HomeEmpateAway
Week of 12/4100.0*Average seed
Chapecoense vs Atlético-MG+1.1+0.1-0.9
Ponte Preta vs Coritiba-0.4+0.3+0.3
Fluminense vs Internacional-0.2+0.2+0.2
São Paulo vs Santa Cruz-0.2+0.2+0.2
Grêmio vs Botafogo-0.2+0.1+0.1

What If

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

100100100100100100100100100100100100100100100100100100100100
If finish:ChanceChance will finish season at seed
TPW-L-Ewins titleLibertadores1234567891011121314151617181920Serie BCount
551-0-0NoNo6238No15,181,970
530-0-1NoNo5842No11,039,250
520-1-0NoNo1641349No19,415,740
Total:NoNo213328144No45,636,960
Points
Chance Will Win Championship