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
Flatbush 63 DRS 58 -0.6
Week of 2/5100.0*Average seed
DRS 51 Haftr 48 +0.4
Magen David 54 YDE 43 +0.3
Flatbush 67 Rambam 54 +0.2
HANC 74 D. Hatorah 49 -0.0
If winner is:HomeAway
Week of 2/12100.0*Average seed
HANC vs YDE+0.5-0.5

What If

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

100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567891011Count
100-0In485221,195,336
Total:In485221,195,336
Games Above .500
Chance Will Make Playoffs