Alright, let's work through 8378 times 585 step by step
8378 × 585 = 585 × (8378)
+ 585 × 8 what gives us 4680
+ 585 × 70 that equals 40950
+ 585 × 300 that equals 175500
+ 585 × 8000 yielding 4680000

= 4901130
