Alright, let's work through 6623 times 101 step by step
6623 × 101 = 101 × (6623)
+ 101 × 3 that results in 303
+ 101 × 20 that results in 2020
+ 101 × 600 that equals 60600
+ 101 × 6000 which equals 606000

= 668923
