No problem, we've got 1604 and 4164 to multiply
1604 × 4164 = 4164 × (1604)
+ 4164 × 4 giving us 16656
+ 4164 × 00 giving us 0
+ 4164 × 600 resulting in 2498400
+ 4164 × 1000 giving us 4164000

= 6679056
