Alright, let's work through 6621 times 6469 step by step
6621 × 6469 = 6469 × (6621)
+ 6469 × 1 giving us 6469
+ 6469 × 20 producing 129380
+ 6469 × 600 that equals 3881400
+ 6469 × 6000 giving us 38814000

= 42831249
