Alright, let's work through 4164 times 3120 step by step
4164 × 3120 = 3120 × (4164)
+ 3120 × 4 that is equal 12480
+ 3120 × 60 producing 187200
+ 3120 × 100 giving us 312000
+ 3120 × 4000 that results in 12480000

= 12991680
