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*Serie B100.0*Average seed
Fluminense 3 Avaí 1 +18.1
-0.5
Coritiba 1 Santos 0 +14.5
-0.3
Joinville 1 Vasco da Gama 2 +4.0
-0.1
Figueirense 0 Chapecoense 0 -0.8
+0.1
Week of 11/28100.0*Serie B100.0*Average seed
Avaí 1 Ponte Preta 0 -37.1
+1.0
Palmeiras 0 Coritiba 2 +12.9
-0.4
Vasco da Gama 1 Santos 0 +9.3
-0.2
Chapecoense 1 Goiás 3 +6.1
-0.1
São Paulo 3 Figueirense 2 -5.4
+0.1
If winner is:HomeEmpateAway
Week of 12/6100.0*Serie B100.0*Average seed
Corinthians vs Avaí+13.2+1.8No
-0.3-0.0+1.2
Figueirense vs Fluminense+29.4-15.7-15.7
-0.6+0.3+0.3
Coritiba vs Vasco da Gama-15.3-15.4+29.4
+0.2+0.4-0.5
Goiás vs São Paulo+19.0-6.9-6.9
-0.4+0.2+0.2

What If

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

100100100100100100100100100100100100100100100100100100100100
If finish:ChanceChance will finish season at seed
TPW-L-Ewins titleLibertadores1234567891011121314151617181920Serie BCount
441-0-0NoNo5842No6,474,130
420-0-1NoNo43451257.2%10,267,840
410-1-0NoNo314521368.625,678,990
Total:NoNo9363815255.4%42,420,960
Points
Chance Will Win Championship