Alright, let's work through 8266 times 1015 step by step
8266 × 1015 = 1015 × (8266)
+ 1015 × 6 which equals 6090
+ 1015 × 60 resulting in 60900
+ 1015 × 200 producing 203000
+ 1015 × 8000 which equals 8120000

= 8389990
