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*Serie A2100.0*Average seed
Palmeiras 1 Mirassol 2 +3.1
No
+0.2
Santos 0 Corinthians 2 +1.1
+0.0
Ponte Preta 1 Mirassol 2 +0.2
+0.1
Santo Andre 0 Guarani 1 -0.1
Week of 5/1100.0*Chance in playoffs100.0*Serie A2100.0*Average seed
Bragantino 1 Santos 1 In
Santo Andre 2 Mirassol 1 -0.1
Ponte Preta 3 Guarani 1 +0.1
Mirassol 1 Ferroviaria 3 -0.1
Guarani 2 Novorizontino 1 -0.1
If winner is:HomeDrawAway
Week of 5/9100.0*Chance in playoffs100.0*Serie A2100.0*Average seed
Inter de Limeira vs Guarani+0.2+0.2-0.2
Mirassol vs Sao Paulo+0.2+0.2-0.1

What If

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

100100100100
If finish:Chance inChance will finish regular season at seedSerie
TPW-D-Lplayoffs1234A2Count
18-20In100No2,175,815,391*
170-0-1In7426No3,203,577,297
Total:In8515No5,379,392,688

* Row combines multiple less frequent records.

Points
Chance Will Make Playoffs