Alright, let's work through 6687 times 1536 step by step
6687 × 1536 = 1536 × (6687)
+ 1536 × 7 that equals 10752
+ 1536 × 80 resulting in 122880
+ 1536 × 600 producing 921600
+ 1536 × 6000 yielding 9216000

= 10271232
