No problem, we've got 5151 and 3947 to multiply
5151 × 3947 = 3947 × (5151)
+ 3947 × 1 producing 3947
+ 3947 × 50 that equals 197350
+ 3947 × 100 which equals 394700
+ 3947 × 5000 that equals 19735000

= 20330997
