No problem, we've got 1377 and 4084 to multiply
1377 × 4084 = 4084 × (1377)
+ 4084 × 7 giving us 28588
+ 4084 × 70 resulting in 285880
+ 4084 × 300 that is equal 1225200
+ 4084 × 1000 yielding 4084000

= 5623668
