Alright, let's work through 3558 times 3631 step by step
3558 × 3631 = 3631 × (3558)
+ 3631 × 8 resulting in 29048
+ 3631 × 50 that results in 181550
+ 3631 × 500 producing 1815500
+ 3631 × 3000 producing 10893000

= 12919098
