Alright, let's work through 8136 times 8385 step by step
8136 × 8385 = 8385 × (8136)
+ 8385 × 6 which equals 50310
+ 8385 × 30 that equals 251550
+ 8385 × 100 which equals 838500
+ 8385 × 8000 that is equal 67080000

= 68220360
