Alright, let's work through 2989 times 8220 step by step
2989 × 8220 = 8220 × (2989)
+ 8220 × 9 yielding 73980
+ 8220 × 80 that is equal 657600
+ 8220 × 900 resulting in 7398000
+ 8220 × 2000 which equals 16440000

= 24569580
