Alright, let's work through 9911 times 1406 step by step
9911 × 1406 = 1406 × (9911)
+ 1406 × 1 that is equal 1406
+ 1406 × 10 which equals 14060
+ 1406 × 900 which equals 1265400
+ 1406 × 9000 yielding 12654000

= 13934866
