No problem, we've got 1620 and 1688 to multiply
1620 × 1688 = 1688 × (1620)
+ 1688 × 0 producing 0
+ 1688 × 20 giving us 33760
+ 1688 × 600 resulting in 1012800
+ 1688 × 1000 giving us 1688000

= 2734560
