Alright, let's work through 4145 times 4082 step by step
4145 × 4082 = 4082 × (4145)
+ 4082 × 5 giving us 20410
+ 4082 × 40 that equals 163280
+ 4082 × 100 giving us 408200
+ 4082 × 4000 producing 16328000

= 16919890
