How are these numbers calculated?

Big Games

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

Week of 2/15100.0*Chance wins title
HUL 5 FIF 4 +0.1
If winner is:HomeHome OTHome SOAway SOAway OTAway
BRA vs DUNYesYesYes+0.0+0.0-0.0
FIF vs HUL-0.0-0.0-0.0YesYesYes
If winner is:HomeHome OTHome SOAway SOAway OTAway
Week of 2/22100.0*Chance wins title
DUN vs BRA-0.0+0.0+0.0YesYesYes
FIF vs EDI-0.0-0.0-0.0YesYesYes

What If

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

100100100100100
If finish:ChanceChance will finish season at seed
TPWL-OTwins title12345Count
43-55Yes10038,404,959*
4206-199.1%991104,874
4107-096.697372,117
Total:100.0%100038,581,950

* Row combines multiple less frequent records.

Points
Chance Will Win Championship