Creating big number of arrary in blender I am trying to make visual comparison of money stacked upon each other in group of 100 notes(bills).

In screen shot, small stack on left is \$100 and on right it is \$1 million which i created through array modifier.

The problem is i have to make it till billions and already, my system is running out of memory.

Please suggest me a good technique for it (give bit details as i am newbie). Thanks
Create a single cube, scaled to the size you want to represent.  UV unwrap the cube. Add an image texture of the bill you want to use and set its scaling to match the number of bills you want across and along the surface.