Alright, let's work through 9780 times 8397 step by step
9780 × 8397 = 8397 × (9780)
+ 8397 × 0 producing 0
+ 8397 × 80 which equals 671760
+ 8397 × 700 that results in 5877900
+ 8397 × 9000 what gives us 75573000

= 82122660
