How are these numbers calculated?

Big Games

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

Week of 1/11100.0*Chance in playoffs100.0*Promoted100.0*Average seed
Saints 18 Castres 12 +12.4
+0.2
Edinburgh 17 Munster 26 +5.8
+0.0
+0.1
Ospreys 15 Tigers 15 *+0.5
Toulouse 35 Treviso 14 -0.5
Ulster 23 Glasgow 6 +0.4
Sharks 6 Montpellier 27 -0.1
Week of 1/18100.0*Chance in playoffs100.0*Promoted100.0*Average seed
Tigers 9 Toulouse 5 -50.5
-0.5
Montpellier 23 Toulon 3 -17.7
-0.4
Saracens 40 Edinburgh 7 -0.7
-0.0
Munster 29 Racing Métro 6 +0.5
Yes
Glasgow 27 Saints 20 *-0.1
Biarritz 9 Quins 16 +0.1

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

Games Above .500  (Full Screen)
Chance Will Make Playoffs  (Full Screen)