Alright, let's work through 2491 times 5255 step by step
2491 × 5255 = 5255 × (2491)
+ 5255 × 1 that is equal 5255
+ 5255 × 90 that results in 472950
+ 5255 × 400 that results in 2102000
+ 5255 × 2000 producing 10510000

= 13090205
