We're going to solve 8427 multiplied by 9997
8427 × 9997 = 9997 × (8427)
+ 9997 × 7 that is equal 69979
+ 9997 × 20 which equals 199940
+ 9997 × 400 that results in 3998800
+ 9997 × 8000 that results in 79976000

= 84244719
