No problem, we've got 3184 and 1620 to multiply
3184 × 1620 = 1620 × (3184)
+ 1620 × 4 giving us 6480
+ 1620 × 80 yielding 129600
+ 1620 × 100 which equals 162000
+ 1620 × 3000 which equals 4860000

= 5158080
