Alright, let's work through 2563 times 8267 step by step
2563 × 8267 = 8267 × (2563)
+ 8267 × 3 giving us 24801
+ 8267 × 60 resulting in 496020
+ 8267 × 500 that results in 4133500
+ 8267 × 2000 producing 16534000

= 21188321
