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
Flatbush 78 DRS 68 -0.5
+0.2
JEC 64 Magen David 79 +0.4
+0.5
Flatbush 43 Rambam 31 -0.1
Haftr 43 North Shore 40 -0.1
YDE 45 Rambam 31 -0.0
HANC 65 Ezra 25 -0.0
If winner is:HomeAway
MTA vs FlatbushIn-1.3
Shaare T. vs North Shore+0.1-0.0
If winner is:HomeAway
Week of 2/9100.0*Chance in playoffs100.0*Average seed
Magen David vs FlatbushIn-2.0
+0.3-1.4
Magen David vs North ShoreIn-1.4
+0.5-1.5
YDE vs Magen David-0.7In
-1.0+0.6

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
8-9In10015,052,762*
71-2In31442422,926,002
60-374.6%7525322,196
Total:99.6%820278018,300,960

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs