I agree, avv. It should be "Hey gimme 78 packs of cigs". Not...
"Hey gimme a pack of cigs."
"Hey gimme another pack of cigs."
"I need to buy another pack of cigs."
"Can i get another pack of cigs? Thanks."
"Hey i know! How 'bout a pack of cigs."
"Can a guy get a pack of cigs around here?"
etc