Alright, let's work through 3857 times 1801 step by step
3857 × 1801 = 1801 × (3857)
+ 1801 × 7 giving us 12607
+ 1801 × 50 that results in 90050
+ 1801 × 800 that is equal 1440800
+ 1801 × 3000 yielding 5403000

= 6946457
