How are these numbers calculated?

Big Games

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

Week of 11/28100.0*Average seed
Michael 11 Ethan 15 -0.4
Michael 12 Miles 14 -0.4
Michael 7 Zakk 12 -0.3
If winner is:HomeAway
Week of 12/5100.0*Average seed
Kiel vs Zakk-0.3+0.3

What If

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

100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789Count
20-0Out584251,445,942
Total:Out584251,445,942
Games Above .500
Chance Will Make Playoffs