How are these numbers calculated?

Big Games

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

Week of 11/17100.0*Average seed
Adam 122 Gruzs 97 -0.2
If winner is:HomeAway
Week of 11/24100.0*Average seed
Larry vs Gruzs-0.2+0.2
Adam vs Marty-0.0+0.3

What If

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

100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345Count
102-0In10017,310,613
91-1In514923,955,187
80-2In11896,672,700
Total:In633747,938,500
Games Above .500
Chance Will Make Playoffs