How are these numbers calculated?

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 9/25100.0*Lottery seed
Tonga 35 Namibia 21 +1.9
South Africa 46 Samoa 6 +0.1
Scotland 39 United States 16 -0.1
Ireland 44 Romania 10 -0.1
Australia 65 Uruguay 3 -0.1
Wales 23 Fiji 13 -0.0
France 41 Canada 18 -0.0
Argentina 54 Georgia 9 -0.0
Week of 10/2100.0*Lottery seed
Namibia 16 Georgia 17 +1.0
Uruguay 15 Fiji 47 -0.2
Samoa 5 Japan 26 -0.1
South Africa 64 United States 0 -0.1
New Zealand 43 Georgia 10 -0.1
Week of 10/9100.0*Lottery seed
England 60 Uruguay 3 -0.2
If winner is:HomeTieAway
Argentina vs Namibia+0.3-0.9-1.8
United States vs Japan+0.8+0.7-0.2

What If

100100100100100100100100100100100100100100100100100100100100
If finish:Chance will finish season at seed
TPW-OTLT1234567891011121314151617181920
41-000204832
20-001955
00-0108119
Total:13146715
Points
Chance Will Make Playoffs