Alright, let's work through 3831 times 3906 step by step
3831 × 3906 = 3906 × (3831)
+ 3906 × 1 giving us 3906
+ 3906 × 30 resulting in 117180
+ 3906 × 800 that results in 3124800
+ 3906 × 3000 giving us 11718000

= 14963886
