We're going to solve 6443 multiplied by 1009
6443 × 1009 = 1009 × (6443)
+ 1009 × 3 that is equal 3027
+ 1009 × 40 that is equal 40360
+ 1009 × 400 producing 403600
+ 1009 × 6000 producing 6054000

= 6500987
