No problem, we've got 3999 and 5022 to multiply
3999 × 5022 = 5022 × (3999)
+ 5022 × 9 yielding 45198
+ 5022 × 90 resulting in 451980
+ 5022 × 900 which equals 4519800
+ 5022 × 3000 which equals 15066000

= 20082978
