Alright, let's work through 3978 times 4571 step by step
3978 × 4571 = 4571 × (3978)
+ 4571 × 8 producing 36568
+ 4571 × 70 giving us 319970
+ 4571 × 900 resulting in 4113900
+ 4571 × 3000 what gives us 13713000

= 18183438
