No problem, we've got 4326 and 1391 to multiply
4326 × 1391 = 1391 × (4326)
+ 1391 × 6 what gives us 8346
+ 1391 × 20 yielding 27820
+ 1391 × 300 resulting in 417300
+ 1391 × 4000 resulting in 5564000

= 6017466
