'How many bricks each of size `25 c m\ xx\ 10 c m\ xx\ 8c m` will be required to

"How many bricks each of size `25 c m\ xx\ 10 c m\ xx\ 8c m`
will be required to build a wall 5m long, 3m
high and 16cm thick, assuming that the volume of sand and cement used in the
construction is negligible?"