How are these numbers calculated?

Big Games

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

Week of 2/25100.0*Chance wins title100.0*Average seed
Scotland 29 Wales 13 -11.2
-0.8
Ireland 19 France 9 -1.7
England 36 Italy 15 No
+0.0
If winner is:HomeDrawAway
Week of 3/10100.0*Chance wins title100.0*Average seed
Wales vs Ireland+0.6-0.4-0.5

What If

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

100100100100100100
If finish:ChanceChance will finish season at seed
TPW-OTLDwins title123456Count
122-000No465222,376,436,871
101-001No535573326,888,877
81-010No1251384,744,443,273
0-002No524811,264,361
60-011No87616326,938,928
40-020No73272,376,416,750
Total:No11192637710,162,389,060
Points
Chance Will Win Championship