Alright, let's work through 8120 times 8206 step by step
8120 × 8206 = 8206 × (8120)
+ 8206 × 0 producing 0
+ 8206 × 20 yielding 164120
+ 8206 × 100 resulting in 820600
+ 8206 × 8000 what gives us 65648000

= 66632720
