You get 960 dil, 75 marks, and 1 neuro processor per stf run with optional.
Turn in 50 marks and you get 500 dil
Turn in 5 Neural Processors and you get 1000 dil
So this makes 75 marks worth 750 dil (50 marks per 500 dil)
This also makes 1 neural processor worth 200 dil each (1000/5)
So let's total this up and you can get a average total of:
960 dil per elite stf
750 dil for 75 omega marks
200 dil per neural processor
Grand Total is 1910 dil per STF now!