No problem, we've got 3644 and 4555 to multiply
3644 × 4555 = 4555 × (3644)
+ 4555 × 4 resulting in 18220
+ 4555 × 40 which equals 182200
+ 4555 × 600 yielding 2733000
+ 4555 × 3000 producing 13665000

= 16598420
