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 -1.7
+0.1
Madureira 0 Boavista 0 +0.3
+0.1
Week of 4/15100.0*Chance in playoffs100.0*Average seed
Flamengo 1 Vasco da Gama 3 +7.5
+1.5
Boavista 2 Vasco da Gama 2 Out
-0.3
Fluminense 1 Botafogo 0 -5.2
+0.1
Portuguesa 2 Flamengo 2 +1.9
Madureira 4 Macae 2 -0.2
-0.1
Nova Iguacu 4 Resende 2 -0.0
If winner is:HomeDrawAway
Week of 4/25100.0*Chance in playoffs100.0*Average seed
Resende vs Vasco da Gama-2.2-0.2+0.9
Fluminense vs Madureira+0.3+0.0-0.5
Bangu vs Nova Iguacu+0.3+0.3-0.2
Botafogo vs Macae-0.1+0.2+0.2
Portuguesa vs Boavista+0.0+0.0-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-Lplayoffs123456789101112RelegationCount
171-0-0Out7426No2,002,918,095
150-1-0Out1543357No879,833,294
140-0-1Out1243404No785,940,611
Total:Out4425111191No3,668,692,000
Points
Chance Will Make Playoffs