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 in playoffs100.0*Wooden Spoon100.0*Average seed
England 36 Italy 15 -0.5
+2.7
-0.0
Scotland 29 Wales 13 -0.4
+0.3
If winner is:HomeDrawAway
Week of 3/10100.0*Chance in playoffs100.0*Wooden Spoon100.0*Average seed
Wales vs IrelandOutOut+0.0
+1.0-0.0-0.6

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seedWooden
TPW-D-Lplayoffs123456SpoonCount
82-0-01.7%2742424.2%42,259,821
61-1-0Out653534.624,190,246
0-4Out100Yes2,717,259,193*
Total:0.0%029898.3%2,783,709,260

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs