Alright, let's work through 8423 times 1585 step by step
8423 × 1585 = 1585 × (8423)
+ 1585 × 3 which equals 4755
+ 1585 × 20 yielding 31700
+ 1585 × 400 what gives us 634000
+ 1585 × 8000 which equals 12680000

= 13350455
