We're going to solve 8418 multiplied by 1621
8418 × 1621 = 1621 × (8418)
+ 1621 × 8 resulting in 12968
+ 1621 × 10 what gives us 16210
+ 1621 × 400 resulting in 648400
+ 1621 × 8000 yielding 12968000

= 13645578
