How are these numbers calculated?

Big Games

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

Week of 2/6100.0*Average seed
Flatbush 14 Ramaz 32 +0.2
Bruriah 31 Maayanot 41 +0.0
If winner is:HomeAway
Week of 2/20100.0*Average seed
Maayanot vs Frisch+0.9-0.6

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
81-0In505016,747,307
70-1In10023,744,125
Total:In21215940,491,432
Games Above .500
Chance Will Make Playoffs