Alright, let's work through 2543 times 8512 step by step
2543 × 8512 = 8512 × (2543)
+ 8512 × 3 that is equal 25536
+ 8512 × 40 that equals 340480
+ 8512 × 500 yielding 4256000
+ 8512 × 2000 which equals 17024000

= 21646016
