No problem, we've got 5002 and 5123 to multiply
5002 × 5123 = 5123 × (5002)
+ 5123 × 2 which equals 10246
+ 5123 × 00 giving us 0
+ 5123 × 000 giving us 0
+ 5123 × 5000 which equals 25615000

= 25625246
