Alright, let's work through 5623 times 7839 step by step
5623 × 7839 = 7839 × (5623)
+ 7839 × 3 yielding 23517
+ 7839 × 20 that is equal 156780
+ 7839 × 600 producing 4703400
+ 7839 × 5000 that results in 39195000

= 44078697
