Alright, let's work through 3878 times 2659 step by step
3878 × 2659 = 2659 × (3878)
+ 2659 × 8 what gives us 21272
+ 2659 × 70 yielding 186130
+ 2659 × 800 giving us 2127200
+ 2659 × 3000 what gives us 7977000

= 10311602
