Alright, let's work through 5490 times 5391 step by step
5490 × 5391 = 5391 × (5490)
+ 5391 × 0 producing 0
+ 5391 × 90 producing 485190
+ 5391 × 400 producing 2156400
+ 5391 × 5000 resulting in 26955000

= 29596590
