How are these numbers calculated?

Big Games

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

Week of 1/31100.0*Chance in playoffs100.0*Average seed
Stone Bridge 4 Langley 2 -12.6
-1.5
Patriot 10 Battlefield 7 -8.1
-0.2
Kettle Run/Liberty 2 Loudoun Valley/Woodgrove 3 +4.5
+0.1
Loudoun County/John Champe 6 Flint Hill 13 -1.5
-0.0
McLean 5 Briar Woods 8 +0.3
+0.6
Week of 2/7100.0*Chance in playoffs100.0*Average seed
McLean 1 Langley 3 In
+4.2
Tuscarora/Westfield 12 Loudoun Valley/Woodgrove 2 -12.4
-0.1
Flint Hill 8 Kettle Run/Liberty 9 -3.6
-0.1
Week of 2/14None

What If

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

100100100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-L-Tplayoffs12345678910111213141516171819202122Count
110-0-0In100608,406,760
Total:In100608,406,760
Games Above .500
Chance Will Make Playoffs