We're going to solve 4389 multiplied by 4129
4389 × 4129 = 4129 × (4389)
+ 4129 × 9 that is equal 37161
+ 4129 × 80 yielding 330320
+ 4129 × 300 giving us 1238700
+ 4129 × 4000 that equals 16516000

= 18122181
