No problem, we've got 6345 and 3840 to multiply
6345 × 3840 = 3840 × (6345)
+ 3840 × 5 which equals 19200
+ 3840 × 40 producing 153600
+ 3840 × 300 yielding 1152000
+ 3840 × 6000 that equals 23040000

= 24364800
