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*Chance in playoffs
Michael 11 Ethan 15 In
Week of 12/5None

What If

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

100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789Count
80-0In100180,065,806
Total:In100180,065,806
Games Above .500
Chance Will Make Playoffs