Alright, let's work through 1939 times 3808 step by step
1939 × 3808 = 3808 × (1939)
+ 3808 × 9 which equals 34272
+ 3808 × 30 yielding 114240
+ 3808 × 900 yielding 3427200
+ 3808 × 1000 which equals 3808000

= 7383712
