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
Carolina 5 Myrtle Beach 1 -0.1
-0.1
Potomac 4 Salem 2 +0.1
Potomac 5 Salem 4 +0.1
Winston-Salem 5 Wilmington 3 -0.0
Winston-Salem 11 Wilmington 3 -0.0
If winner is:HomeAway
Saturday100.0*Chance in playoffs100.0*Average seed
Carolina vs Myrtle Beach-0.1+0.2
Carolina vs Myrtle Beach-0.1+0.2

What If

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

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678Count
4010-01.9%2534576,981
399-10.2002971606,814
388-20.000128802,347,093
377-30.00039525,161,578
366-4Out0861307,163,448
355-5Out05941006,581,100
344-6Out024706004,064,257
333-7Out35237701,671,730
322-8Out0848368441,746
311-9Out16483668,020
300-10Out1287113,405
Total:0.0%002662741028,196,172
Games Above .500  (Full Screen)
Chance Will Make Playoffs  (Full Screen)