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
Ulster 23 Glasgow 6 -0.0
Toulouse 35 Treviso 14 +0.0
Week of 1/18100.0*Chance in playoffs100.0*Promoted100.0*Average seed
Glasgow 27 Saints 20 +0.3
+0.3
+0.9
Connacht 25 Zebre 20 -0.0
Games Above .500
Chance Will Make Playoffs