No problem, we've got 6440 and 3549 to multiply
6440 × 3549 = 3549 × (6440)
+ 3549 × 0 which equals 0
+ 3549 × 40 giving us 141960
+ 3549 × 400 that results in 1419600
+ 3549 × 6000 resulting in 21294000

= 22855560
