Alright, let's work through 1221 times 7166 step by step
1221 × 7166 = 7166 × (1221)
+ 7166 × 1 resulting in 7166
+ 7166 × 20 yielding 143320
+ 7166 × 200 that results in 1433200
+ 7166 × 1000 that equals 7166000

= 8749686
