Alright, let's work through 8578 times 6423 step by step
8578 × 6423 = 6423 × (8578)
+ 6423 × 8 yielding 51384
+ 6423 × 70 yielding 449610
+ 6423 × 500 what gives us 3211500
+ 6423 × 8000 which equals 51384000

= 55096494
