No problem, we've got 1638 and 5568 to multiply
1638 × 5568 = 5568 × (1638)
+ 5568 × 8 resulting in 44544
+ 5568 × 30 what gives us 167040
+ 5568 × 600 yielding 3340800
+ 5568 × 1000 what gives us 5568000

= 9120384
