How are these numbers calculated?

Big Games

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

Week of 11/29100.0*Average seed
Brian 91.6 Miller 55.1 +0.1
Riv 96.7 Tosti 83.2 -0.1
If winner is:HomeAway
Week of 12/6100.0*Average seed
Riv vs James-0.1+0.1
Brian vs Mike+0.1-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
11-12In10012,531,865*
100-2In75254,181,271
Total:In94616,713,136

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs