Alright, let's work through 9978 times 8289 step by step
9978 × 8289 = 8289 × (9978)
+ 8289 × 8 that is equal 66312
+ 8289 × 70 yielding 580230
+ 8289 × 900 giving us 7460100
+ 8289 × 9000 which equals 74601000

= 82707642
