No problem, we've got 4284 and 4321 to multiply
4284 × 4321 = 4321 × (4284)
+ 4321 × 4 that is equal 17284
+ 4321 × 80 resulting in 345680
+ 4321 × 200 that results in 864200
+ 4321 × 4000 yielding 17284000

= 18511164
