Alright, let's work through 8904 times 8638 step by step
8904 × 8638 = 8638 × (8904)
+ 8638 × 4 yielding 34552
+ 8638 × 00 producing 0
+ 8638 × 900 that results in 7774200
+ 8638 × 8000 what gives us 69104000

= 76912752
