Alright, let's work through 5665 times 5631 step by step
5665 × 5631 = 5631 × (5665)
+ 5631 × 5 that equals 28155
+ 5631 × 60 producing 337860
+ 5631 × 600 that is equal 3378600
+ 5631 × 5000 that results in 28155000

= 31899615
