We're going to solve 4989 multiplied by 3120
4989 × 3120 = 3120 × (4989)
+ 3120 × 9 producing 28080
+ 3120 × 80 resulting in 249600
+ 3120 × 900 what gives us 2808000
+ 3120 × 4000 producing 12480000

= 15565680
