No problem, we've got 6421 and 8006 to multiply
6421 × 8006 = 8006 × (6421)
+ 8006 × 1 that results in 8006
+ 8006 × 20 giving us 160120
+ 8006 × 400 which equals 3202400
+ 8006 × 6000 producing 48036000

= 51406526
