No problem, we've got 5071 and 3997 to multiply
5071 × 3997 = 3997 × (5071)
+ 3997 × 1 producing 3997
+ 3997 × 70 yielding 279790
+ 3997 × 000 giving us 0
+ 3997 × 5000 producing 19985000

= 20268787
