No problem, we've got 3189 and 3939 to multiply
3189 × 3939 = 3939 × (3189)
+ 3939 × 9 that is equal 35451
+ 3939 × 80 that equals 315120
+ 3939 × 100 what gives us 393900
+ 3939 × 3000 giving us 11817000

= 12561471
