How are these numbers calculated?

Big Games

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

Week of 4/25100.0*Chance in playoffs100.0*Average seed
Palmeiras 1 Mirassol 2 +4.4
+0.1
Bragantino 0 Ferroviaria 0 -3.0
-0.1
Palmeiras 0 Inter de Limeira 1 +2.1
Sao Bento 1 Novorizontino 1 +0.4
+0.1
Week of 5/1100.0*Chance in playoffs100.0*Average seed
Bragantino 1 Santos 1 In
-0.1
Guarani 2 Novorizontino 1 +0.3
Novorizontino 2 Botafogo 2 +0.1
If winner is:HomeDrawAway
Week of 5/9100.0*Chance in playoffs100.0*Average seed
Botafogo vs Bragantino-0.3+0.0+0.0
Corinthians vs Novorizontino+0.0+0.0-0.1

What If

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

100100100100
If finish:Chance inChance will finish regular season at seedSerie
TPW-D-Lplayoffs1234A2Count
23-25In100No4,614,740,675*
220-0-1In7030No764,652,013
Total:In964No5,379,392,688

* Row combines multiple less frequent records.

Points
Chance Will Make Playoffs