No problem, we've got 3521 and 6405 to multiply
3521 × 6405 = 6405 × (3521)
+ 6405 × 1 resulting in 6405
+ 6405 × 20 giving us 128100
+ 6405 × 500 that is equal 3202500
+ 6405 × 3000 that is equal 19215000

= 22552005
