No problem, we've got 4042 and 1391 to multiply
4042 × 1391 = 1391 × (4042)
+ 1391 × 2 resulting in 2782
+ 1391 × 40 that is equal 55640
+ 1391 × 000 that results in 0
+ 1391 × 4000 that results in 5564000

= 5622422
