We're going to solve 8640 multiplied by 6415
8640 × 6415 = 6415 × (8640)
+ 6415 × 0 resulting in 0
+ 6415 × 40 what gives us 256600
+ 6415 × 600 that equals 3849000
+ 6415 × 8000 yielding 51320000

= 55425600
