Alright, let's work through 8638 times 5087 step by step
8638 × 5087 = 5087 × (8638)
+ 5087 × 8 that is equal 40696
+ 5087 × 30 resulting in 152610
+ 5087 × 600 what gives us 3052200
+ 5087 × 8000 yielding 40696000

= 43941506
