Alright, let's work through 3664 times 7980 step by step
3664 × 7980 = 7980 × (3664)
+ 7980 × 4 producing 31920
+ 7980 × 60 which equals 478800
+ 7980 × 600 that results in 4788000
+ 7980 × 3000 giving us 23940000

= 29238720
