Alright, let's work through 9963 times 5904 step by step
9963 × 5904 = 5904 × (9963)
+ 5904 × 3 yielding 17712
+ 5904 × 60 that is equal 354240
+ 5904 × 900 what gives us 5313600
+ 5904 × 9000 that is equal 53136000

= 58821552
