We're going to solve 3989 multiplied by 4113
3989 × 4113 = 4113 × (3989)
+ 4113 × 9 giving us 37017
+ 4113 × 80 that equals 329040
+ 4113 × 900 producing 3701700
+ 4113 × 3000 which equals 12339000

= 16406757
