Let's calculate 3369 x 6400
3369 × 6400 = 6400 × (3369)
+ 6400 × 9 that is equal 57600
+ 6400 × 60 resulting in 384000
+ 6400 × 300 that results in 1920000
+ 6400 × 3000 what gives us 19200000

= 21561600
