Alright, let's work through 9905 times 8388 step by step
9905 × 8388 = 8388 × (9905)
+ 8388 × 5 which equals 41940
+ 8388 × 00 that equals 0
+ 8388 × 900 that equals 7549200
+ 8388 × 9000 what gives us 75492000

= 83083140
