No problem, we've got 6456 and 1224 to multiply
6456 × 1224 = 1224 × (6456)
+ 1224 × 6 which equals 7344
+ 1224 × 50 that equals 61200
+ 1224 × 400 producing 489600
+ 1224 × 6000 yielding 7344000

= 7902144
