Alright, let's work through 6321 times 3333 step by step
6321 × 3333 = 3333 × (6321)
+ 3333 × 1 that equals 3333
+ 3333 × 20 resulting in 66660
+ 3333 × 300 that equals 999900
+ 3333 × 6000 giving us 19998000

= 21067893
