No problem, we've got 4031 and 1662 to multiply
4031 × 1662 = 1662 × (4031)
+ 1662 × 1 that is equal 1662
+ 1662 × 30 producing 49860
+ 1662 × 000 resulting in 0
+ 1662 × 4000 producing 6648000

= 6699522
