No problem, we've got 3974 and 3945 to multiply
3974 × 3945 = 3945 × (3974)
+ 3945 × 4 that is equal 15780
+ 3945 × 70 producing 276150
+ 3945 × 900 which equals 3550500
+ 3945 × 3000 what gives us 11835000

= 15677430
