How are these numbers calculated?

Big Games

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

If winner is:HomeAway
Week of 9/14100.0*Chance in playoffs100.0*Average seed
Back Door vs Virgin+10.7-10.7
+0.9-0.9
South vs Pats+0.1-0.1
If winner is:HomeAway
Week of 9/21100.0*Chance in playoffs100.0*Average seed
South vs Back Door-10.7+10.7
-0.9+0.9

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
1313-0In1006,323
1212-1In100030,610
1111-2In9730182,754
1010-3In811810671,323
99-4In4143142001,675,535
88-5100.0%524372581003,016,986
77-685.3016203127122004,019,488
66-714.7002122731206104,019,649
55-80.0001825372453,014,165
44-9Out0021443411,675,224
33-10Out011881671,754
22-11Out0397183,565
11-12Out010030,375
00-13Out1006,319
Total:50.0%88888888888819,204,070
Games Above .500
Chance Will Make Playoffs