How are these numbers calculated?

Big Games

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

Week of 5/7100.0*Chance in playoffs100.0*Average seed
Mafia 7 Puckin 6 +26.5
+0.7
Disco 4 Butt 8 -4.4
-0.1
4th 1 Glory 10 +1.5
+0.1
OBC 0 Four 5 -0.6
Week of 5/14100.0*Chance in playoffs100.0*Average seed
Glory 10 Mafia 5 -5.8
-0.2
Butt 11 Jazz 4 -5.6
-0.1
Four 8 4th 12 -5.1
-0.1
Puckin 3 Disco 4 -0.1
If winner is:HomeAway
Week of 5/21100.0*Chance in playoffs100.0*Average seed
Mafia vs Four+24.1-52.1
+0.5-1.0
Butt vs OBC-36.1+11.6
-0.8+0.3
Yeo vs 4th+16.9-6.5
+0.2-0.1
Puckin vs Glory+5.8-1.4
+0.1-0.0
Disco vs Jazz+0.1-0.3

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
61-080.6%69121961,514,757
50-14.4495028,503,063
Total:56.5%47943090,017,820
Games Above .500
Chance Will Make Playoffs