Alright, let's work through 4904 times 4052 step by step
4904 × 4052 = 4052 × (4904)
+ 4052 × 4 that equals 16208
+ 4052 × 00 resulting in 0
+ 4052 × 900 producing 3646800
+ 4052 × 4000 what gives us 16208000

= 19871008
