I'm new to DnD, though not new to rpgs in general.
I'm a bit confused on the damage of spells. For example, the Fireball deals 8d6 fire damage on a failed saving throw, and half as much on a successfull one. What exactly is "half as much" in this case?
Is it 4d6 (half the number of dice)? Do I throw 8d6, add them up and halve the sum? Or do I throw 8d3 (half each die)?