How are these numbers calculated?

Big Games

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

Week of 10/10100.0*Chance in playoffs100.0*Average seed
Madison 0 Omaha 0 -8.8
-0.1
North Texas 2 Richmond 1 +6.8
-0.0
Fort Lauderdale 2 Madison 2 +0.3
+0.0
Tucson 2 Greenville 2 +0.0
Week of 10/17100.0*Chance in playoffs100.0*Average seed
Orlando II 1 Richmond 3 -27.7
-0.3
Greenville 1 Omaha 2 +24.8
+0.6
Richmond 0 South Georgia 1 +10.9
+0.1
Madison 0 North Texas 1 -7.3
-0.1
Chattanooga 1 Madison 1 +0.8
+0.1
If winner is:HomeDrawAway
Week of 10/24100.0*Chance in playoffs100.0*Average seed
Omaha vs Fort Lauderdale+33.1-5.8Out
+0.5-0.1-0.5
Richmond vs ChattanoogaOut+8.4+23.8
-0.3+0.0+0.3
North Texas vs South Georgia-5.8+3.5+3.5
-0.4+0.2+0.2

What If

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

100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-Lplayoffs1234567891011Count
291-0-062.4%62386,375,183,057
270-1-023.52353234,188,616,578
260-0-1Out62386,375,103,015
Total:29.3%29512016,938,902,650
Points
Chance Will Make Playoffs