Alright, let's work through 3948 times 3857 step by step
3948 × 3857 = 3857 × (3948)
+ 3857 × 8 giving us 30856
+ 3857 × 40 that results in 154280
+ 3857 × 900 that results in 3471300
+ 3857 × 3000 that results in 11571000

= 15227436
