Alright, let's work through 3644 times 1119 step by step
3644 × 1119 = 1119 × (3644)
+ 1119 × 4 what gives us 4476
+ 1119 × 40 yielding 44760
+ 1119 × 600 producing 671400
+ 1119 × 3000 producing 3357000

= 4077636
