No problem, we've got 1389 and 3398 to multiply
1389 × 3398 = 3398 × (1389)
+ 3398 × 9 producing 30582
+ 3398 × 80 what gives us 271840
+ 3398 × 300 that is equal 1019400
+ 3398 × 1000 resulting in 3398000

= 4719822
