We're going to solve 3947 multiplied by 3143
3947 × 3143 = 3143 × (3947)
+ 3143 × 7 that results in 22001
+ 3143 × 40 that is equal 125720
+ 3143 × 900 that results in 2828700
+ 3143 × 3000 what gives us 9429000

= 12405421
