We're going to solve 4107 multiplied by 4009
4107 × 4009 = 4009 × (4107)
+ 4009 × 7 what gives us 28063
+ 4009 × 00 producing 0
+ 4009 × 100 that is equal 400900
+ 4009 × 4000 that equals 16036000

= 16464963
