Alright, let's work through 6599 times 812 step by step
6599 × 812 = 812 × (6599)
+ 812 × 9 giving us 7308
+ 812 × 90 that equals 73080
+ 812 × 500 that equals 406000
+ 812 × 6000 producing 4872000

= 5358388
