No problem, we've got 3878 and 1601 to multiply
3878 × 1601 = 1601 × (3878)
+ 1601 × 8 giving us 12808
+ 1601 × 70 that results in 112070
+ 1601 × 800 what gives us 1280800
+ 1601 × 3000 giving us 4803000

= 6208678
