Alright, let's work through 3804 times 866 step by step
3804 × 866 = 866 × (3804)
+ 866 × 4 yielding 3464
+ 866 × 00 producing 0
+ 866 × 800 which equals 692800
+ 866 × 3000 giving us 2598000

= 3294264
