Alright, let's work through 4902 times 7883 step by step
4902 × 7883 = 7883 × (4902)
+ 7883 × 2 that equals 15766
+ 7883 × 00 that is equal 0
+ 7883 × 900 that is equal 7094700
+ 7883 × 4000 that equals 31532000

= 38642466
