Alright, let's work through 8829 times 621 step by step
8829 × 621 = 621 × (8829)
+ 621 × 9 yielding 5589
+ 621 × 20 what gives us 12420
+ 621 × 800 which equals 496800
+ 621 × 8000 that is equal 4968000

= 5482809
