We're going to solve 5266 multiplied by 3999
5266 × 3999 = 3999 × (5266)
+ 3999 × 6 resulting in 23994
+ 3999 × 60 yielding 239940
+ 3999 × 200 resulting in 799800
+ 3999 × 5000 producing 19995000

= 21058734
