Alright, let's work through 3646 times 635 step by step
3646 × 635 = 635 × (3646)
+ 635 × 6 yielding 3810
+ 635 × 40 producing 25400
+ 635 × 600 which equals 381000
+ 635 × 3000 that equals 1905000

= 2315210
