How are these numbers calculated?

Big Games

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

Week of 2/18100.0*Chance wins title100.0*Average seed
Uruguay 23 Brazil 12 -4.4
-0.8
Canada 34 United States 51 -2.5
+0.0
Chile 10 Argentina XV 45 -2.5
+0.0
Week of 2/25100.0*Chance wins title100.0*Average seed
Argentina XV 79 Brazil 7 -0.5
Chile 9 United States 57 +0.2
Uruguay 17 Canada 13 +0.1
Week of 3/3100.0*Chance wins title100.0*Average seed
Brazil 24 Canada 23 +0.8

What If

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

100100100100100100
If finish:ChanceChance will finish season at seed
TPW-OTLDwins title123456Count
80-000No10015,632,161,844
Total:No10015,632,161,844
Points
Chance Will Win Championship