No problem, we've got 7327 and 8640 to multiply
7327 × 8640 = 8640 × (7327)
+ 8640 × 7 yielding 60480
+ 8640 × 20 that is equal 172800
+ 8640 × 300 that results in 2592000
+ 8640 × 7000 what gives us 60480000

= 63305280
