Alright, let's work through 4155 times 9659 step by step
4155 × 9659 = 9659 × (4155)
+ 9659 × 5 yielding 48295
+ 9659 × 50 producing 482950
+ 9659 × 100 giving us 965900
+ 9659 × 4000 which equals 38636000

= 40133145
