First of all, it has nothing to do with the operation. If division was possible between zero's, it would happen clearly. This question has to do with numerology since the greater part of posters seem to recognize any number divided by a number results in unity. You can have limits. Sure. But this isn't the crux of why something cannot divided by zero. You cannot divide by zero because you are working already in a series of numbers and whilst zero is considered a number, it is best to think of it as no quantity at all. You cannot divided a real number by a pseudo-number. You cannot divided nothing by something, no more you can divide a real set of numbers by something which is infinite. You can not define a real number by an undefined operation. Zero literally means, zero. It is nothing, it does not hold the same class as the real numbers in which real quantities are defined.