No problem, we've got 3989 and 3415 to multiply
3989 × 3415 = 3415 × (3989)
+ 3415 × 9 that is equal 30735
+ 3415 × 80 which equals 273200
+ 3415 × 900 producing 3073500
+ 3415 × 3000 yielding 10245000

= 13622435
