No problem, we've got 3878 and 4821 to multiply
3878 × 4821 = 4821 × (3878)
+ 4821 × 8 yielding 38568
+ 4821 × 70 that is equal 337470
+ 4821 × 800 that results in 3856800
+ 4821 × 3000 what gives us 14463000

= 18695838
