Question 338443
Well if we compare volumes...

A 3x4x5 has 60 cubic units...the 2x2x3 has 12 cubic units....thus five of them should fit, IF they fit in neatly...I suspect this si a trickier problem than simply answering five...one has to look at the practicality of putting 2x2x3 boxes in a 3x4x5 box...