Alright, let's work through 6635 times 3453 step by step
6635 × 3453 = 3453 × (6635)
+ 3453 × 5 producing 17265
+ 3453 × 30 which equals 103590
+ 3453 × 600 resulting in 2071800
+ 3453 × 6000 producing 20718000

= 22910655
