Alright, let's work through 8221 times 1617 step by step
8221 × 1617 = 1617 × (8221)
+ 1617 × 1 which equals 1617
+ 1617 × 20 which equals 32340
+ 1617 × 200 that equals 323400
+ 1617 × 8000 yielding 12936000

= 13293357
