How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Serie C100.0*Average seed
Oeste 0 Joinville 2 -19.5
+0.5
Bahia 3 Bragantino 2 -1.3
+0.1
If winner is:HomeEmpateAway
Week of 11/25100.0*Serie C100.0*Average seed
Nautico vs Oeste-29.3-5.3Yes
+0.3+0.1-0.3
Joinville vs Vila Nova-29.3-5.3Yes
+0.3+0.1-0.3

What If

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

100100100100100100100100100100100100100100100100100100100100
If finish:ChanceChance will finish season at seed
TPW-L-Ewins titleSerie A1234567891011121314151617181920Serie CCount
401-0-0NoNo623838.0%5,373,584
380-0-1NoNo386262.03,392,812
370-1-0NoNo100Yes5,373,924
Total:NoNo336767.3%14,140,320
Points
Chance Will Win Championship