How are these numbers calculated?

Big Games

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

Week of 5/28100.0*Chance in playoffs100.0*World Cup Qualifying100.0*Average seed
Vanuatu 0 Solomon Islands 1 -28.5
-16.1
-1.3
Vanuatu 0 New Zealand 5 -8.6
-7.0
-0.4
Papua New Guinea 1 New Caledonia 1 -0.5
-0.7
-0.1
Tahiti 4 Samoa 0 -0.1
-0.3
New Zealand 3 Fiji 1 -0.1
+0.1
If winner is:HomeTieAway
Solomon Islands vs Fiji-0.1-0.1+1.0
+1.7-1.8-7.5
+0.0-0.0-0.1
New Caledonia vs Samoa-0.2+0.9-0.1
+0.9-0.5-2.1
+0.1-0.1-0.2
Papua New Guinea vs Tahiti-0.2-0.1+0.2
-0.3-0.1+0.3
If winner is:HomeTieAway
Week of 6/4100.0*Chance in playoffs100.0*World Cup Qualifying100.0*Average seed
Fiji vs VanuatuOutOut+1.5
No-5.7+74.1
-0.5+0.1+1.5
Papua New Guinea vs Samoa-0.2+0.9-0.1
+0.4-0.8-2.7
+0.1-0.2-0.2
Tahiti vs New Caledonia+0.1-0.1-0.2
+0.5-0.1-1.4
New Zealand vs Solomon Islands+0.1-0.2-0.2
+0.2-0.3-0.3

What If

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

100100100100100100100100
If finish:Chance inWorld CupChance will finish regular season at seed
TPW-OTLTplayoffsQualifying12345678Count
31-0001.8%93.6%0229636011,258,818
10-001Out13.8014582810,882,445
00-010OutNo247639,575,745
Total:0.3%19.5%00514275461,717,008
Points
Chance Will Make Playoffs