How are these numbers calculated?

Big Games

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

Week of 9/25100.0*Chance in playoffs100.0*Average seed
Gulfport 28 St. Martin 10 -12.7
-0.7
If winner is:HomeAway
Week of 10/2100.0*Chance in playoffs100.0*Average seed
Hancock vs St. Martin-9.3+14.8
-0.6+0.9
Biloxi vs Harrison Central+0.5-0.4
George County vs Gulfport-0.3+0.2

What If

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

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678Count
66-0In80200316,695
55-1100.0%275021202,612,462
44-285.3111363814109,412,169
33-313.30112373712117,869,722
22-40.00220502918,788,122
11-5Out0178310,365,876
00-6Out1002,351,962
Total:21.6%24791317212761,717,008
Games Above .500
Chance Will Make Playoffs