Why?For which reason is that?!
Actually the idea of making alot of probes from 1 mat is the correct answer potentially. 1 mat is equal to 1 ton in this game. How much should a probe weigh and how many equal 1 ton. That should tell you how many it should make.
I mean ... why? They are probes, not cargo, not even ammo. They are magic probes, or tiny pulses of energy, or boxes of kit-kats for all I care.
When do we stock up on food and drink in our Asp Explorers? I seem to have missed that stage. Do we replicate food, like Picard? When do we pay for all the bog roll, toothpaste, and hilarious off-colour Yamiks travel tapes we clearly must consume in space? Or is it just so insignificant it's not worth bothering about, relative to other expenses?
In a game.
Seriously. Why?