Alright, let's work through 4165 times 4878 step by step
4165 × 4878 = 4878 × (4165)
+ 4878 × 5 yielding 24390
+ 4878 × 60 which equals 292680
+ 4878 × 100 that results in 487800
+ 4878 × 4000 giving us 19512000

= 20316870
