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*Average seed
Internacional 1 Grêmio 0 +0.1
Atlético-MG 2 Goiás 2 -0.1
Week of 11/28100.0*Average seed
Grêmio 2 Atlético-MG 1 -0.2
If winner is:HomeEmpateAway
Week of 12/6100.0*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 Atlético-MG finish out the regular season.   Explain

100100100100100100100100100100100100100100100100100100100100
If finish:ChanceChance will finish season at seed
TPW-L-Ewins titleLibertadores1234567891011121314151617181920Serie BCount
691-0-0NoYes100No21,389,598
670-0-1NoYes4456No10,262,462
660-1-0NoYes4456No10,768,900
Total:NoYes7228No42,420,960
Points
Chance Will Win Championship