Alright, let's work through 9901 times 1304 step by step
9901 × 1304 = 1304 × (9901)
+ 1304 × 1 yielding 1304
+ 1304 × 00 what gives us 0
+ 1304 × 900 producing 1173600
+ 1304 × 9000 resulting in 11736000

= 12910904
