How are these numbers calculated?

Big Games

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

Week of 10/30100.0*Average seed
Shrew 6 Chara 16 +0.1
Hattrick 3 Glory 11 -0.0
Week of 11/6100.0*Average seed
Shrew 4 Puckin 5 +0.1
Puck Bud 11 Hattrick 4 -0.0
If winner is:HomeAway
Week of 11/13100.0*Average seed
Shrew vs Hattrick-0.5+0.5

What If

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

100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789Count
11-0Out97346,732,603
00-1Out10045,858,017
Total:Out495192,590,620
Games Above .500
Chance Will Make Playoffs