How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Serie A100.0*Average seed
Criciuma 1 Vasco da Gama 0 -7.0
-0.5
Tupi 1 Nautico 4 -3.4
-0.1
Bahia 3 Bragantino 2 -2.0
-0.2
Londrina 0 Avai 1 +0.2
-0.2
If winner is:HomeEmpateAway
Week of 11/25100.0*Serie A100.0*Average seed
Nautico vs Oeste-26.1YesYes
-0.3+0.3+0.3
Vasco da Gama vs CearaYes-22.4-23.6
+0.8-0.7-0.7
Atletico GO vs Bahia+0.4-0.3-0.3
+0.1+0.1-0.3
Avai vs Brasil de Pelotas-0.1-0.1+0.3

What If

Chances based on how well the Vasco da Gama finish out the regular season.   Explain

100100100100100100100100100100100100100100100100100100100100
If finish:ChanceChance will finish season at seed
TPW-L-Ewins titleSerie A1234567891011121314151617181920Serie CCount
651-0-0NoYes205821No19,682,096
630-0-1No48.7%14851No10,636,472
620-1-0No47.54753No14,031,992
Total:No71.1%9263629No44,350,560
Points
Chance Will Win Championship