Alright, let's work through 5391 times 2345 step by step
5391 × 2345 = 2345 × (5391)
+ 2345 × 1 that equals 2345
+ 2345 × 90 that is equal 211050
+ 2345 × 300 which equals 703500
+ 2345 × 5000 that is equal 11725000

= 12641895
