How are these numbers calculated?

Big Games

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

Week of 4/11100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Pirae 4 Auckland City 11 -23.9
-23.9
-1.9
If winner is:HomeDrawAway
Ba vs Gaïtcha-3.4+2.0+2.5
-3.4+2.0+2.5
-0.1+0.1+0.1
Tafea vs Team Wellington-0.9+1.8*+0.0
-0.9+1.8*+0.0
-0.0+0.1-0.0
Hekari United vs Team Wellington-0.9+1.8*+0.0
-0.9+1.8*+0.0
-0.0+0.1-0.0
Tafea vs Hekari United-0.3+1.3-0.3
-0.3+1.3-0.3
-0.0+0.1-0.0
Tefana vs Hekari United-0.6+0.9+0.2
-0.6+0.9+0.2
Tefana vs Tafea-0.5+0.9+0.1
-0.5+0.9+0.1
Western United vs Amicale-0.3+0.5*+0.1
-0.3+0.5*+0.1
+0.0+0.1-0.1
Auckland City vs Western United-0.4+0.4+0.2
-0.4+0.4+0.2
If winner is:HomeDrawAway
Week of 4/18100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Ba vs Pirae-43.0-18.9+51.8
-43.0-18.9+51.8
-2.0-0.0+2.0
Amicale vs Auckland City+0.4+0.8-0.8
+0.4+0.8-0.8
-0.0+0.1+0.0

* 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 Pirae finish out the regular season.   Explain

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsPlayoffs123456789101112Count
61-0-095.3%95.3%3214724502,475,195
40-1-024.524.503214427501,150,928
30-0-10.50.5005243924712,474,213
Total:43.5%43.5%19201412151710306,100,336
Points
Chance Will Make Playoffs