No problem, we've got 6384 and 1615 to multiply
6384 × 1615 = 1615 × (6384)
+ 1615 × 4 resulting in 6460
+ 1615 × 80 what gives us 129200
+ 1615 × 300 producing 484500
+ 1615 × 6000 resulting in 9690000

= 10310160
