How are these numbers calculated?

Big Games

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

Week of 11/11100.0*Serie C100.0*Average seed
Boa Esporte 4 Santa Cruz 2 +1.4
Guarani 2 CRB 1 +0.4
Nautico 1 Londrina 2 +0.1
Week of 11/17100.0*Serie C100.0*Average seed
Santa Cruz 5 Juventude 2 +0.7
ABC 2 Oeste 0 -0.2
Paysandu 4 Santa Cruz 2 -0.2
Nautico 1 Vila Nova 2 +0.1
If winner is:HomeDrawAway
Week of 11/24100.0*Serie C100.0*Average seed
Ceara vs ABC+0.2+0.2-0.8

What If

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

If finish:ChanceChance will finish season at seed
TPW-D-Lwins titleSerie A1234567891011121314151617181920Serie CCount
Chance Will Win Championship