Let's calculate 8320 x 3387
8320 × 3387 = 3387 × (8320)
+ 3387 × 0 what gives us 0
+ 3387 × 20 what gives us 67740
+ 3387 × 300 resulting in 1016100
+ 3387 × 8000 that results in 27096000

= 28179840
