Alright, let's work through 8289 times 7939 step by step
8289 × 7939 = 7939 × (8289)
+ 7939 × 9 resulting in 71451
+ 7939 × 80 which equals 635120
+ 7939 × 200 what gives us 1587800
+ 7939 × 8000 resulting in 63512000

= 65806371
