If 80 people were shot, assuming these guys are not sharpshooters and they are certainly not, then the number of shots fired is double or triple that. Add to that some of them are using fullauto weapons, and that many street shooters empty the mag every time they shoot, it is easy to guess that the number of shots fired could easily be between 400 to 800 rounds. That's very likely more rounds than was fired in Baghdad over the same period.