How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Friday100.0*Chance in playoffs100.0*Average seed
Winston-Salem 11 Wilmington 3 +8.5
+0.2
Winston-Salem 5 Wilmington 3 +8.5
+0.2
Potomac 5 Salem 4 +8.3
+0.2
Potomac 4 Salem 2 +8.3
+0.2
Carolina 5 Myrtle Beach 1 +0.2
If winner is:HomeAway
Saturday100.0*Chance in playoffs100.0*Average seed
Winston-Salem vs Wilmington+6.1-6.1
+0.1-0.1
Potomac vs Salem+6.1-6.1
+0.1-0.1
Potomac vs Salem+6.1-6.1
+0.1-0.1
Carolina vs Myrtle Beach+0.1-0.1

What If

Chances based on how well the Winston-Salem finish out the regular season.   Explain

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678Count
44-45In100493,428*
437-299.9%10001,732,394
426-398.99914,035,251
415-494.59466,049,327
404-582.883176,049,273
393-662.26203804,031,856
382-737.33706211,731,052
371-815.91517950435,685
360-93.7137323156,884
Total:81.9%820180024,615,150

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs