No problem, we've got 5687 and 1680 to multiply
5687 × 1680 = 1680 × (5687)
+ 1680 × 7 which equals 11760
+ 1680 × 80 producing 134400
+ 1680 × 600 producing 1008000
+ 1680 × 5000 that is equal 8400000

= 9554160
