Alright, let's work through 8130 times 1221 step by step
8130 × 1221 = 1221 × (8130)
+ 1221 × 0 that is equal 0
+ 1221 × 30 yielding 36630
+ 1221 × 100 that is equal 122100
+ 1221 × 8000 that equals 9768000

= 9926730
