We're going to solve 3539 multiplied by 2401
3539 × 2401 = 2401 × (3539)
+ 2401 × 9 resulting in 21609
+ 2401 × 30 giving us 72030
+ 2401 × 500 that results in 1200500
+ 2401 × 3000 resulting in 7203000

= 8497139
