No problem, we've got 4325 and 3664 to multiply
4325 × 3664 = 3664 × (4325)
+ 3664 × 5 what gives us 18320
+ 3664 × 20 that is equal 73280
+ 3664 × 300 producing 1099200
+ 3664 × 4000 which equals 14656000

= 15846800
