No problem, we've got 4067 and 1596 to multiply
4067 × 1596 = 1596 × (4067)
+ 1596 × 7 giving us 11172
+ 1596 × 60 giving us 95760
+ 1596 × 000 which equals 0
+ 1596 × 4000 that is equal 6384000

= 6490932
