Alright, let's work through 4579 times 4084 step by step
4579 × 4084 = 4084 × (4579)
+ 4084 × 9 that results in 36756
+ 4084 × 70 giving us 285880
+ 4084 × 500 giving us 2042000
+ 4084 × 4000 yielding 16336000

= 18700636
