Alright, let's work through 2558 times 8280 step by step
2558 × 8280 = 8280 × (2558)
+ 8280 × 8 that is equal 66240
+ 8280 × 50 resulting in 414000
+ 8280 × 500 that results in 4140000
+ 8280 × 2000 producing 16560000

= 21180240
