Alright, let's work through 8023 times 6531 step by step
8023 × 6531 = 6531 × (8023)
+ 6531 × 3 that is equal 19593
+ 6531 × 20 what gives us 130620
+ 6531 × 000 what gives us 0
+ 6531 × 8000 giving us 52248000

= 52398213
