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
Ramaz 43 SAR 54 -20.1
-0.8
Hillel 56 Heschel 53 +12.5
+0.2
JEC 64 Magen David 79 +3.0
+0.1
Haftr 43 North Shore 40 -2.3
-0.1
YDE 45 Rambam 31 -1.8
If winner is:HomeAway
JEC vs Ramaz-36.7+36.7
-0.9+0.9
MTA vs Heschel+13.3-13.3
+0.4-0.4
Shaare T. vs North Shore-4.7+4.7
-0.1+0.1
If winner is:HomeAway
Week of 2/9100.0*Chance in playoffs100.0*Average seed
Magen David vs North Shore-5.5+5.5
-0.1+0.1
Hillel vs Shaare T.+5.4-5.4
-0.2+0.2
YDE vs Magen David-2.4+2.4
Magen David vs Flatbush-0.7+0.7

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
41-081.2%5527192,726,990
30-17.8842502,730,130
Total:44.5%271730255,457,120
Games Above .500
Chance Will Make Playoffs