Alright, let's work through 8239 times 1014 step by step
8239 × 1014 = 1014 × (8239)
+ 1014 × 9 that is equal 9126
+ 1014 × 30 that is equal 30420
+ 1014 × 200 that results in 202800
+ 1014 × 8000 giving us 8112000

= 8354346
