Alright, let's work through 5679 times 2791 step by step
5679 × 2791 = 2791 × (5679)
+ 2791 × 9 giving us 25119
+ 2791 × 70 what gives us 195370
+ 2791 × 600 yielding 1674600
+ 2791 × 5000 producing 13955000

= 15850089
