How are these numbers calculated?

Big Games

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

Week of 12/27100.0*Chance in playoffs100.0*Average seed
Comsewogue 64 Lindenhurst 65 +0.3
-0.1
Mt. Sinai 68 Sachem East 58 +0.3
Sachem North 53 BBP 62 +0.2
+0.1
ESM 47 Smithtown East 57 -0.2
Sachem North 48 Pierson 38 -0.1
-0.1
Centereach 56 PatchMed 62 -0.1
+0.1
Smithtown East 72 Floyd 44 -0.1
+0.1
Copiague 54 Commack 63 +0.1
Lindenhurst 77 PatchMed 81 -0.1
+0.1
Longwood 54 Southampton 66 +0.1
Harborfields 59 Connetquot 54 +0.0

What If

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

100100100100100100100100100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910111213141516171819202122232425262728Count
98-0In0416292815512,206
87-186.4%0172031261120023,256
76-220.200416303015400110,569
65-30.100182435247100297,103
54-4Out00182737226100492,048
43-5Out0018263622610512,743
32-6Out0172740233326,027
21-7Out01134936117,042
10-8Out168418,210
Total:2.4%00000011235811131312119741,899,204
Games Above .500
Chance Will Make Playoffs