Alright, let's work through 7872 times 508 step by step
7872 × 508 = 508 × (7872)
+ 508 × 2 giving us 1016
+ 508 × 70 producing 35560
+ 508 × 800 that equals 406400
+ 508 × 7000 producing 3556000

= 3998976
