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 -4.6
+0.0
Madureira 0 Boavista 0 +1.4
+0.1
Week of 4/15100.0*Chance in playoffs100.0*Average seed
Fluminense 1 Botafogo 0 Out
-0.8
Flamengo 1 Vasco da Gama 3 -1.7
-0.3
Madureira 4 Macae 2 -0.4
-0.1
Boavista 2 Vasco da Gama 2 +0.2
Nova Iguacu 4 Resende 2 -0.1
If winner is:HomeDrawAway
Week of 4/25100.0*Chance in playoffs100.0*Average seed
Botafogo vs Macae+0.6-0.9-1.5
Bangu vs Nova Iguacu+0.6+0.4-0.3
Fluminense vs Madureira+0.3-0.3-0.3
Portuguesa vs Boavista+0.1-0.0-0.3
Resende vs Vasco da Gama+0.2+0.0-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-Lplayoffs123456789101112RelegationCount
151-0-0Out6294421No2,389,317,655
130-1-0Out1060273No879,770,015
120-0-1Out344918No399,604,330
Total:Out4193132123No3,668,692,000
Points
Chance Will Make Playoffs