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 +19.3
+0.7
Madureira 0 Boavista 0 +1.8
+0.1
Week of 4/15100.0*Chance in playoffs100.0*Average seed
Fluminense 1 Botafogo 0 In
+0.7
Madureira 4 Macae 2 -2.0
-0.1
Flamengo 1 Vasco da Gama 3 -2.0
Bangu 1 Volta Redonda 1 +0.2
Portuguesa 2 Flamengo 2 +0.2
If winner is:HomeDrawAway
Week of 4/25100.0*Chance in playoffs100.0*Average seed
Fluminense vs Madureira+0.9-0.9-0.9
Portuguesa vs Boavista-0.2+0.3+0.3
Flamengo vs Volta Redonda-0.1+0.4-0.1

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
221-0-0In2476No1,825,190,378
200-1-0In34355No879,800,023
190-0-1In4258No963,701,599
Total:In12382128No3,668,692,000
Points
Chance Will Make Playoffs