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 -0.1
-0.1
Madureira 0 Boavista 0 In
Week of 4/15100.0*Chance in playoffs100.0*Average seed
Flamengo 1 Vasco da Gama 3 -0.4
Portuguesa 2 Flamengo 2 +0.2
Fluminense 1 Botafogo 0 -0.2
Bangu 1 Volta Redonda 1 -0.1
If winner is:HomeDrawAway
Week of 4/25100.0*Chance in playoffs100.0*Average seed
Flamengo vs Volta Redonda+1.1-0.6-0.7
Fluminense vs Madureira-0.3+0.1+0.3
Portuguesa vs Boavista-0.4+0.2+0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-Lplayoffs123456789101112RelegationCount
231-0-0In100No451,756,389
210-1-0In434511No285,046,630
200-0-1In324918No451,790,317
Total:In38233010No1,188,593,336
Points
Chance Will Make Playoffs