man, let me get my 7 year old registered, she's pretty good with math, maybe i can have her school ya some
it's generally accepted that manuals lose about 15% and that auto's lose about 20% through their drivetrains
so, as can be displayed in the etch a sketch graphic above, you take your rwhp # (line 1) division symbol (line 2) acceptable drivetrain loss - mine is an auto (line 3) equals symbol (line 4) "estimated" (estimated) crank hp (line 5)
by the way since you appear to be match challenged, .8 dividing is the same as .2 multiplying 80% plus 20% = 100%
hope that helps a pro like yourself, being the seasoned racer and self proclaimed peoples champion of the streets that you are i'm sure you don't have time for complicated things like basic math
OMG !!!!
I just laughed so hard, I think I pee'd a little !!!!