We're going to solve 3420 multiplied by 1182
3420 × 1182 = 1182 × (3420)
+ 1182 × 0 producing 0
+ 1182 × 20 that results in 23640
+ 1182 × 400 which equals 472800
+ 1182 × 3000 that is equal 3546000

= 4042440
