Alright, let's work through 9903 times 2448 step by step
9903 × 2448 = 2448 × (9903)
+ 2448 × 3 that is equal 7344
+ 2448 × 00 producing 0
+ 2448 × 900 yielding 2203200
+ 2448 × 9000 giving us 22032000

= 24242544
