No problem, we've got 5418 and 8640 to multiply
5418 × 8640 = 8640 × (5418)
+ 8640 × 8 what gives us 69120
+ 8640 × 10 giving us 86400
+ 8640 × 400 giving us 3456000
+ 8640 × 5000 resulting in 43200000

= 46811520
