No problem, we've got 4023 and 4993 to multiply
4023 × 4993 = 4993 × (4023)
+ 4993 × 3 that results in 14979
+ 4993 × 20 giving us 99860
+ 4993 × 000 resulting in 0
+ 4993 × 4000 giving us 19972000

= 20086839
