Alright, let's work through 4151 times 4089 step by step
4151 × 4089 = 4089 × (4151)
+ 4089 × 1 resulting in 4089
+ 4089 × 50 which equals 204450
+ 4089 × 100 which equals 408900
+ 4089 × 4000 that equals 16356000

= 16973439
