How are these numbers calculated?

Big Games

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

Week of 8/12100.0*Chance in playoffs100.0*Average seed
Santomauro 553 Billy 488 -0.8
-0.5
Mike Neal 530 Andrew 497 +0.3
-0.1
Luis 527 Alty 488 -0.3
+0.1
Lapi 511 OQ 312 -0.2
-0.1
Randy 407 Gallo 422 -0.1
If winner is:HomeAway
Week of 8/19100.0*Chance in playoffs100.0*Average seed
Billy vs LapiIn-1.2
+0.8-0.8
Andrew vs Randy-1.1+1.1
Vinny vs Luis+0.6-0.6
+0.1-0.1
Alty vs Santomauro-0.4+0.4
-0.2+0.2
Gallo vs Manny-0.1+0.1
OQ vs Mike Neal+0.1-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs123456789101112Count
132-0-0In9914,180,519
121-1-0In265913108,351,398
110-2-095.2%134933504,181,219
Total:98.8%3830101381016,713,136
Games Above .500
Chance Will Make Playoffs