We're going to solve 3859 multiplied by 4005
3859 × 4005 = 4005 × (3859)
+ 4005 × 9 yielding 36045
+ 4005 × 50 that is equal 200250
+ 4005 × 800 that is equal 3204000
+ 4005 × 3000 that results in 12015000

= 15455295
