Alright, let's work through 6817 times 663 step by step
6817 × 663 = 663 × (6817)
+ 663 × 7 giving us 4641
+ 663 × 10 that equals 6630
+ 663 × 800 that equals 530400
+ 663 × 6000 that equals 3978000

= 4519671
