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
Madureira 0 Boavista 0 In
Week of 4/15100.0*Chance in playoffs100.0*Average seed
Flamengo 1 Vasco da Gama 3 -0.5
Portuguesa 2 Flamengo 2 +0.3
Fluminense 1 Botafogo 0 -0.1
Bangu 1 Volta Redonda 1 +0.0
If winner is:HomeDrawAway
Week of 4/25100.0*Chance in playoffs100.0*Average seed
Flamengo vs Volta Redonda+1.0-0.7-1.1
Fluminense vs Madureira-0.2+0.2+0.3
Portuguesa vs Boavista-0.2+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
231-0-0In100No1,763,120,488
210-1-0In385012No879,771,826
200-0-1In194932No1,025,799,686
Total:In48142612No3,668,692,000
Points
Chance Will Make Playoffs