Alright, let's work through 7839 times 3992 step by step
7839 × 3992 = 3992 × (7839)
+ 3992 × 9 that equals 35928
+ 3992 × 30 that equals 119760
+ 3992 × 800 giving us 3193600
+ 3992 × 7000 resulting in 27944000

= 31293288
