Alright, let's work through 3811 times 3634 step by step
3811 × 3634 = 3634 × (3811)
+ 3634 × 1 yielding 3634
+ 3634 × 10 that equals 36340
+ 3634 × 800 that equals 2907200
+ 3634 × 3000 which equals 10902000

= 13849174
