No problem, we've got 8000 and 5020 to multiply
8000 × 5020 = 5020 × (8000)
+ 5020 × 0 resulting in 0
+ 5020 × 00 which equals 0
+ 5020 × 000 that results in 0
+ 5020 × 8000 producing 40160000

= 40160000
