0, for Maker’s sake.
Every Caldari child will tell you that. Because unlike Minmatars we do study geometry and know pretty much well, that whenever you put rhombus, on a paper in 2 dimensions, or in 3, in 4, in 5 or 6 - it will remain a FLAT figure.
So, unless you’re talking about images or projections of said sandwiches you won’t be able to fit A SINGLE ONE into it.
Damn minamtars.
It’s FLAT!!! In any amount of directions.
FLAT.