We're going to solve 8421 multiplied by 8906
8421 × 8906 = 8906 × (8421)
+ 8906 × 1 producing 8906
+ 8906 × 20 giving us 178120
+ 8906 × 400 that results in 3562400
+ 8906 × 8000 yielding 71248000

= 74997426
