We're going to solve 8409 multiplied by 9715
8409 × 9715 = 9715 × (8409)
+ 9715 × 9 that is equal 87435
+ 9715 × 00 which equals 0
+ 9715 × 400 resulting in 3886000
+ 9715 × 8000 what gives us 77720000

= 81693435
