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
Longwood 54 Southampton 66 -0.5
-0.6
Mt. Sinai 68 Sachem East 58 +0.1
Comsewogue 64 Lindenhurst 65 +0.1
-0.1
Sachem North 53 BBP 62 +0.1
+0.1
Lindenhurst 77 PatchMed 81 +0.1
Centereach 56 PatchMed 62 +0.1
Sachem North 48 Pierson 38 -0.1
Smithtown East 72 Floyd 44 +0.1
Harborfields 59 Connetquot 54 +0.0

What If

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

100100100100100100100100100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910111213141516171819202122232425262728Count
76-097.3%01619352512201,376
65-118.40041428291861019,009
54-20.0001415303116300116,393
43-3Out00172537236100367,542
32-4Out000623372671631,392
21-5Out006284421560,930
10-6Out12276202,562
Total:0.3%0000000011236912151718151,899,204
Games Above .500
Chance Will Make Playoffs