Alright, let's work through 3976 times 4608 step by step
3976 × 4608 = 4608 × (3976)
+ 4608 × 6 yielding 27648
+ 4608 × 70 producing 322560
+ 4608 × 900 that equals 4147200
+ 4608 × 3000 which equals 13824000

= 18321408
