Alright, let's work through 8154 times 8507 step by step
8154 × 8507 = 8507 × (8154)
+ 8507 × 4 what gives us 34028
+ 8507 × 50 giving us 425350
+ 8507 × 100 resulting in 850700
+ 8507 × 8000 that is equal 68056000

= 69366078
