normally you are told that you get the result 1 if you divide a number by itself.
If you permit this result at then the value of all numbers isn't unique anymore.
. Now divide both sides of this equation by zero:
. According to the assumption you can cancel out the zeros and you'll get
For me as a customer this method has some advantages: My next car costs only $1.00, because $1.00 is the same as $32,499.00