Alright, let's work through 3688 times 4152 step by step
3688 × 4152 = 4152 × (3688)
+ 4152 × 8 yielding 33216
+ 4152 × 80 producing 332160
+ 4152 × 600 what gives us 2491200
+ 4152 × 3000 giving us 12456000

= 15312576
