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*Chance in playoffs100.0*Average seed
Mike 114.5 Amy 102.5 In
Richie 59.9 David 120.2 In
+0.2
Yuriy 84.2 Vishal 63.7 In
-0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
David 57.3 Yuriy 100.4 -0.2
If winner is:HomeAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
David vs Peter+0.3-0.3
Amy vs Yuriy+0.2-0.2

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
101-0In752516,836,892
90-1In257516,830,608
Total:In505033,667,500
Games Above .500
Chance Will Make Playoffs