No problem, we've got 8463 and 2160 to multiply
8463 × 2160 = 2160 × (8463)
+ 2160 × 3 resulting in 6480
+ 2160 × 60 yielding 129600
+ 2160 × 400 what gives us 864000
+ 2160 × 8000 giving us 17280000

= 18280080
