How are these numbers calculated?

Big Games

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

Week of 4/11100.0*Chance in playoffs100.0*Average seed
Fluminense 3 Nova Iguacu 1 +23.1
+1.0
Madureira 0 Boavista 0 +3.8
+0.1
Week of 4/15100.0*Chance in playoffs100.0*Average seed
Fluminense 1 Botafogo 0 In
+0.8
Madureira 4 Macae 2 -6.9
-0.1
Flamengo 1 Vasco da Gama 3 -2.3
Portuguesa 2 Flamengo 2 +0.2
Bangu 1 Volta Redonda 1 +0.1
If winner is:HomeDrawAway
Week of 4/25100.0*Chance in playoffs100.0*Average seed
Fluminense vs Madureira+1.0-0.5-0.7
Portuguesa vs Boavista-0.4+0.2+0.2
Flamengo vs Volta Redonda-0.1+0.3-0.0

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-Lplayoffs123456789101112RelegationCount
221-0-0In2476No451,795,074
200-1-0In105832No285,016,155
190-0-1In6238No451,782,107
Total:In9313822No1,188,593,336
Points
Chance Will Make Playoffs