How are these numbers calculated?

Big Games

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

Week of 8/13100.0*Chance in playoffs100.0*Average seed
Kangaroos 63 Saints 115 +0.1
Hawks 99 Demons 78 Out
+0.1
Power 61 Eagles 60 +0.7
Bombers 64 Magpies 162 +0.1
Blues 156 Tigers 67 +0.1
Week of 8/20100.0*Chance in playoffs100.0*Average seed
Power 112 Demons 83 +0.7
Magpies 54 Crows 51 +0.2
Saints 115 Tigers 94 +0.2
Eagles 94 Kangaroos 110 -0.1
Week of 8/27100.0*Chance in playoffs100.0*Average seed
Tigers 112 Power 122 +0.3
Demons 103 Kangaroos 113 +0.2
Games Above .500
Chance Will Make Playoffs