Alright, let's work through 8586 times 3645 step by step
8586 × 3645 = 3645 × (8586)
+ 3645 × 6 yielding 21870
+ 3645 × 80 that is equal 291600
+ 3645 × 500 what gives us 1822500
+ 3645 × 8000 which equals 29160000

= 31295970
