Alright, let's work through 6599 times 3221 step by step
6599 × 3221 = 3221 × (6599)
+ 3221 × 9 which equals 28989
+ 3221 × 90 producing 289890
+ 3221 × 500 producing 1610500
+ 3221 × 6000 resulting in 19326000

= 21255379
