No problem, we've got 1606 and 3988 to multiply
1606 × 3988 = 3988 × (1606)
+ 3988 × 6 that results in 23928
+ 3988 × 00 which equals 0
+ 3988 × 600 that results in 2392800
+ 3988 × 1000 producing 3988000

= 6404728
