270 knives

This is the maximum hour of work.
A small example: The ceiling of one apartment takes about 1000 cartridges for G / K (One box)

anecdote

Mother takes her son on a journey:
“Here I put you oil, bread and a kilogram of nails.
But why?
I understand why! Smell the oil on the bread and sing!
And the nails?
Well, here they are, I put it!