No problem, we've got 6419 and 3123 to multiply
6419 × 3123 = 3123 × (6419)
+ 3123 × 9 that is equal 28107
+ 3123 × 10 producing 31230
+ 3123 × 400 giving us 1249200
+ 3123 × 6000 that results in 18738000

= 20046537
