Alright, let's work through 9899 times 786 step by step
9899 × 786 = 786 × (9899)
+ 786 × 9 giving us 7074
+ 786 × 90 that results in 70740
+ 786 × 800 producing 628800
+ 786 × 9000 resulting in 7074000

= 7780614
