Day 035/19. Testing a macro

Testing out a new camera/macro lens combination on an old 1950's computer memory card.
This is a core memory card I bought from ebay some years ago. I was told it was from a Russian computer, probably early 1960's. seems about right.
The individual magnetic cores hold 1 bit of information (basically on or off). 9 of them make a byte of information (8 bits plus parity).
The tip of a ball point pen gives the scale.
The camera memory card I used to store this shot holds 64GB.
That's the equivalent to 64 x 1024 x1024 x 1024 x 9 of these cores, thats 618,475,290,624 of these cores...and how big would that be?