Alright, let's work through 2925 times 4159 step by step
2925 × 4159 = 4159 × (2925)
+ 4159 × 5 giving us 20795
+ 4159 × 20 that results in 83180
+ 4159 × 900 yielding 3743100
+ 4159 × 2000 giving us 8318000

= 12165075
