No problem, we've got 9643 and 1599 to multiply
9643 × 1599 = 1599 × (9643)
+ 1599 × 3 that is equal 4797
+ 1599 × 40 producing 63960
+ 1599 × 600 that equals 959400
+ 1599 × 9000 that results in 14391000

= 15419157
