How are these numbers calculated?

Big Games

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

Week of 2/2100.0*Chance in playoffs100.0*Average seed
Hillel 56 Heschel 53 +2.8
YDE 45 Rambam 31 -0.1
Haftr 43 North Shore 40 +0.1
JEC 64 Magen David 79 -0.1
If winner is:HomeAway
MTA vs HeschelIn-0.3
-0.1+0.3
JEC vs RamazIn-0.1
+0.3-0.6
Shaare T. vs North Shore+0.1-0.0
If winner is:HomeAway
Week of 2/9100.0*Chance in playoffs100.0*Average seed
Hillel vs Shaare T.In-0.2
Magen David vs North ShoreIn-0.2
YDE vs Magen David-0.1In
Magen David vs Flatbush+0.0-0.1

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
51-0In10012,046,616
40-199.8%158506,254,344
Total:99.9%7129018,300,960
Games Above .500
Chance Will Make Playoffs