No problem, we've got 3840 and 7580 to multiply
3840 × 7580 = 7580 × (3840)
+ 7580 × 0 which equals 0
+ 7580 × 40 yielding 303200
+ 7580 × 800 giving us 6064000
+ 7580 × 3000 producing 22740000

= 29107200
