No problem, we've got 3911 and 3380 to multiply
3911 × 3380 = 3380 × (3911)
+ 3380 × 1 what gives us 3380
+ 3380 × 10 what gives us 33800
+ 3380 × 900 what gives us 3042000
+ 3380 × 3000 which equals 10140000

= 13219180
