I'm simply saying that 0 = 0 x a, where a is any number. This is not controversial, it's very simple arithmetic. It's so simple that it's embarrassing to argue about it. You wrongly insist that a must be 0, because you are confused over (slightly) higher mathematics, which leads to to get the basic stuff wrong. As a rule of thumb, if your understanding of a topic you to an obviously wrong conclusion, then your understanding is incorrect. Please demonstrate this assertion. And you haven't yet answered my last post.