Alright, let's work through 9921 times 2899 step by step
9921 × 2899 = 2899 × (9921)
+ 2899 × 1 resulting in 2899
+ 2899 × 20 which equals 57980
+ 2899 × 900 giving us 2609100
+ 2899 × 9000 what gives us 26091000

= 28760979
