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 -0.8
Haftr 48 HANC 50 -0.1
Flatbush 71 SSLI 36 -0.1
Week of 2/5100.0*Average seed
Flatbush 67 Rambam 54 -1.0
HANC 74 D. Hatorah 49 -0.2
DRS 51 Haftr 48 -0.2
If winner is:HomeAway
Week of 2/12100.0*Average seed
HANC vs YDE-0.5+0.5
Shaare T. vs Flatbush+0.5-0.5

What If

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

100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567891011Count
100-0In2550256,743,516
Total:In2550256,743,516
Games Above .500
Chance Will Make Playoffs