No problem, we've got 3649 and 5684 to multiply
3649 × 5684 = 5684 × (3649)
+ 5684 × 9 that equals 51156
+ 5684 × 40 which equals 227360
+ 5684 × 600 yielding 3410400
+ 5684 × 3000 which equals 17052000

= 20740916
