No problem, we've got 3333 and 6348 to multiply
3333 × 6348 = 6348 × (3333)
+ 6348 × 3 resulting in 19044
+ 6348 × 30 producing 190440
+ 6348 × 300 that is equal 1904400
+ 6348 × 3000 producing 19044000

= 21157884
