How are these numbers calculated?

Big Games

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

Week of 3/18100.0*Chance in playoffs100.0*Seletiva100.0*Average seed
Portuguesa 2 Macae 1 +15.0
-0.6
Volta Redonda 3 Madureira 2 +1.5
-0.1
Resende 0 Flamengo 1 -0.6
+0.0
Bangu 0 Boavista 0 -0.8
Week of 3/22100.0*Chance in playoffs100.0*Seletiva100.0*Average seed
Macae 1 Resende 2 *Out
+7.6
-0.3
Portuguesa 2 Madureira 0 +1.8
Boavista 1 Volta Redonda 0 +1.7
-0.1
Flamengo 3 Bangu 0 -0.6
+0.0
Fluminense 3 Macae 0 Yes
-0.0
Nova Iguacu 0 Portuguesa 0 +0.2
-0.0
Bangu 0 Botafogo 2 -0.1
+0.0
Volta Redonda 2 Nova Iguacu 1 +0.1
Week of 3/29100.0*Chance in playoffs100.0*Seletiva100.0*Average seed
Bangu 2 Macae 0 -0.1

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

Points
Chance Will Make Playoffs