Alright, let's work through 8580 times 2765 step by step
8580 × 2765 = 2765 × (8580)
+ 2765 × 0 what gives us 0
+ 2765 × 80 that results in 221200
+ 2765 × 500 yielding 1382500
+ 2765 × 8000 yielding 22120000

= 23723700
