How are these numbers calculated?

Big Games

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

Week of 5/9100.0*Chance in playoffs100.0*European Rugby Champions Cup Berth100.0*Relegated to ProD2100.0*Average seed
Toulon 37 Castres 21 Out
No
+5.4
-0.3
Montpellier 33 Bayonne 16 -0.0
-0.0
-5.9
+0.1
Bordeaux-Bègles 26 Oyonnax 23 +0.1
Toulouse 67 Brive 19 -1.0
+0.1
If winner is:HomeDrawAway
Grenoble vs Clermont+1.1*-0.1-1.2
-0.1+0.1+0.1
Lyon vs La Rochelle-0.6+0.6+0.6
+0.1-0.1-0.1
If winner is:HomeDrawAway
Week of 5/16100.0*Chance in playoffs100.0*European Rugby Champions Cup Berth100.0*Relegated to ProD2100.0*Average seed
Castres vs Brive-18.9+21.9+36.6
+0.5-0.6-1.0
Bordeaux-Bègles vs Bayonne-7.3+14.3+17.5
+0.1-0.3-0.3
La Rochelle vs Racing Métro 92+0.8+0.8-1.4
-0.1-0.1+0.1
Grenoble vs Toulouse+1.1*-0.1-1.1
-0.1+0.1+0.1
Oyonnax vs Lyon-0.2-0.2+1.4

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

What If

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

100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seedRelegated
TPW-D-LplayoffsEuropean Rugby Champions Cup Berth1234567891011121314to ProD2Count
482-0-0OutNo1244925No4,870,453
461-1-0OutNo438471110.7%1,517,445
441-0-1OutNo08394687.620,373,860
0-2-0OutNo08394587.785,441
420-1-1OutNo4366060.01,886,427
400-0-2OutNo2671273.58,541,762
Total:OutNo0412273324124.1%37,275,388
Games Above .500
Chance Will Make Playoffs