Alright, let's work through 8151 times 8360 step by step
8151 × 8360 = 8360 × (8151)
+ 8360 × 1 that equals 8360
+ 8360 × 50 that is equal 418000
+ 8360 × 100 yielding 836000
+ 8360 × 8000 that results in 66880000

= 68142360
