How are these numbers calculated?

Big Games

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

Week of 2/20100.0*Chance wins title100.0*Championship100.0*Average seed
Uruguay 21 Argentina XV 24 -6.7
-6.7
-0.5
United States 64 Chile 0 -0.3
-0.3
+0.0
Canada 52 Brazil 25 -0.2
-0.2
-0.0
Week of 2/27100.0*Chance wins title100.0*Championship100.0*Average seed
Argentina XV 54 Canada 21 No
No
+0.1
Brazil 24 United States 23 -0.2
Chile 20 Uruguay 23 +0.6
If winner is:HomeDrawnAway
Week of 3/5100.0*Chance wins title100.0*Championship100.0*Average seed
Uruguay vs United States+0.4-0.0-0.3
Chile vs Canada+0.3+0.1-0.2
Brazil vs Argentina XV-0.3+0.0+0.0

What If

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

100100100100100100
If finish:ChanceChance will finish season at seed
TPW-OTLDwins titleChampionship123456Count
121-000NoNo2136435,057,647,842
100-001NoNo3268390,265,478
80-010NoNo98656,278,697,908
Total:NoNo92167311,726,611,228
Points
Chance Will Win Championship

Lottery

We are out of the playoffs. Here are the big games and what ifs for draft seeds.
Although it might be more fun to go down swinging.

Big Games

Week of 2/20100.0*Lottery seed
Uruguay 21 Argentina XV 24 +0.5
United States 64 Chile 0 -0.0
Canada 52 Brazil 25 +0.0
Week of 2/27100.0*Lottery seed
Chile 20 Uruguay 23 -0.6
Brazil 24 United States 23 +0.2
Argentina XV 54 Canada 21 -0.1
If winner is:HomeDrawnAway
Week of 3/5100.0*Lottery seed
Uruguay vs United States-0.4+0.0+0.3
Chile vs Canada-0.3-0.1+0.2
Brazil vs Argentina XV+0.3-0.0-0.0

What If

100100100100100100
If finish:Chance will finish season at seed
TPW-OTLD123456
121-000213643
100-0013268
80-0109865
Total:921673