No problem, we've got 4139 and 5387 to multiply
4139 × 5387 = 5387 × (4139)
+ 5387 × 9 that is equal 48483
+ 5387 × 30 yielding 161610
+ 5387 × 100 that is equal 538700
+ 5387 × 4000 yielding 21548000

= 22296793
