How are these numbers calculated?

Big Games

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

Week of 11/15100.0*Chance in playoffs100.0*Average seed
IRSlots 147.46 Chocolate 86.52 -14.8
-0.8
Annexation 88.48 Memo 65.82 -14.8
-0.9
Whites 89.66 10Deep 48.92 +0.1
+0.3
Week of 11/22100.0*Chance in playoffs100.0*Average seed
IRSlots 71.6 Taints 42.86 -13.7
-0.7
Memo 121.98 Whites 84.5 -0.1
-0.1
Duchess 98.24 ITSAWASH 69.18 -0.3
Games Above .500
Chance Will Make Playoffs