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 9/11100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Smithville vs Thrasher-11.7+15.7
-11.7+15.7
-0.7+1.0
West Lowndes vs Biggersville+0.0-0.1
+0.0-0.1
Vardaman vs Coffeeville+0.0-0.1
+0.0-0.1
If winner is:HomeAway
Week of 9/18100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Thrasher vs Vardaman+11.6-15.5
+11.6-15.5
+0.7-1.0
Coffeeville vs Hamilton+0.0-0.1
+0.0-0.1
Coldwater vs West Lowndes+0.0-0.1
+0.0-0.1

What If

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

100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-LplayoffsPlayoffs123456789Count
88-0InYes100527,535
77-1InYes94604,081,741
66-2100.0%100.0%573760014,728,433
55-396.796.7831391930029,984,812
44-432.532.501725352571037,704,235
33-50.10.1003193931829,972,089
22-6OutNo006375714,719,472
11-7OutNo06944,081,640
00-8OutNo100528,283
Total:44.5%44.5%111111111111111111136,328,240
Games Above .500
Chance Will Make Playoffs