No problem, we've got 6486 and 4320 to multiply
6486 × 4320 = 4320 × (6486)
+ 4320 × 6 that equals 25920
+ 4320 × 80 that equals 345600
+ 4320 × 400 producing 1728000
+ 4320 × 6000 which equals 25920000

= 28019520
