Alright, let's work through 2405 times 9902 step by step
2405 × 9902 = 9902 × (2405)
+ 9902 × 5 that is equal 49510
+ 9902 × 00 producing 0
+ 9902 × 400 resulting in 3960800
+ 9902 × 2000 what gives us 19804000

= 23814310
