Alright, let's work through 9921 times 2631 step by step
9921 × 2631 = 2631 × (9921)
+ 2631 × 1 resulting in 2631
+ 2631 × 20 resulting in 52620
+ 2631 × 900 resulting in 2367900
+ 2631 × 9000 giving us 23679000

= 26102151
