We're going to solve 9729 multiplied by 1431
9729 × 1431 = 1431 × (9729)
+ 1431 × 9 producing 12879
+ 1431 × 20 yielding 28620
+ 1431 × 700 what gives us 1001700
+ 1431 × 9000 producing 12879000

= 13922199
