Alright, let's work through 8721 times 4574 step by step
8721 × 4574 = 4574 × (8721)
+ 4574 × 1 yielding 4574
+ 4574 × 20 that is equal 91480
+ 4574 × 700 yielding 3201800
+ 4574 × 8000 yielding 36592000

= 39889854
