Alright, let's work through 8739 times 9661 step by step
8739 × 9661 = 9661 × (8739)
+ 9661 × 9 producing 86949
+ 9661 × 30 that is equal 289830
+ 9661 × 700 that is equal 6762700
+ 9661 × 8000 which equals 77288000

= 84427479
