Alright, let's work through 8389 times 4078 step by step
8389 × 4078 = 4078 × (8389)
+ 4078 × 9 giving us 36702
+ 4078 × 80 resulting in 326240
+ 4078 × 300 producing 1223400
+ 4078 × 8000 that results in 32624000

= 34210342
