No problem, we've got 8599 and 6387 to multiply
8599 × 6387 = 6387 × (8599)
+ 6387 × 9 what gives us 57483
+ 6387 × 90 yielding 574830
+ 6387 × 500 giving us 3193500
+ 6387 × 8000 resulting in 51096000

= 54921813
