Omaha Hi Lo question - cash game and tournament

[Sydenham]

Can any mathematically minded person tell me the likelihood of flopping a low, of making a low on the turn, of making the low on the river with A2, A23 or A234?

I've done quite well at this game over the years but am sick of total fuckwits sucking out with garbage hands. I'll have something like AKK2 double suited, some moron will call a pre-flop raise with something like 8-55-2 or 9-8-5-3, then after flopping a set of aces he'll take a pot sized bet on the turn AND on the river to suck out and scoop.