How are these numbers calculated?

Big Games

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

Week of 1/31100.0*Average seed
YDE 49 Rambam 31 +0.7
Flatbush 63 DRS 58 +0.2
Week of 2/5100.0*Average seed
Magen David 54 YDE 43 -0.4
Flatbush 67 Rambam 54 +0.2
DRS 51 Haftr 48 -0.1
If winner is:HomeAway
Week of 2/12100.0*Average seed
HANC vs YDE-1.0+1.0

What If

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

100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567891011Count
111-0In1003,371,347
100-1In1003,372,169
Total:In50506,743,516
Games Above .500
Chance Will Make Playoffs