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 +8.4
+0.1
YDE 45 Rambam 31 -0.6
Ramaz 43 SAR 54 -0.4
JEC 64 Magen David 79 -0.4
-0.2
Haftr 43 North Shore 40 +0.2
If winner is:HomeAway
JEC vs RamazIn-1.6
+0.3-0.3
MTA vs HeschelIn-1.6
-0.2+0.2
Shaare T. vs North Shore+0.8-0.8
If winner is:HomeAway
Week of 2/9100.0*Chance in playoffs100.0*Average seed
Magen David vs North ShoreIn-1.6
+0.1-0.1
YDE vs Magen David-1.6In
-0.1+0.1
Hillel vs Shaare T.In-1.6
Magen David vs Flatbush+0.8-0.8

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
51-0In1002,730,130
40-196.9%366132,726,990
Total:98.4%683025,457,120
Games Above .500
Chance Will Make Playoffs