Alright, let's work through 6625 times 816 step by step
6625 × 816 = 816 × (6625)
+ 816 × 5 yielding 4080
+ 816 × 20 which equals 16320
+ 816 × 600 resulting in 489600
+ 816 × 6000 that results in 4896000

= 5406000
