Alright, let's work through 2558 times 4688 step by step
2558 × 4688 = 4688 × (2558)
+ 4688 × 8 that is equal 37504
+ 4688 × 50 which equals 234400
+ 4688 × 500 that equals 2344000
+ 4688 × 2000 that equals 9376000

= 11991904
