One millionth of a trillionth is a trillionth because a trillion is a million trillion. One trillionth of unity is this figure : 0 , 000000000000000001 . Suppose we divide a stone into a trillion equal parts. For each part would be a trillionth of the stone. Now, how much is a trillion? Well, a million billion, but I don't know how much that is.
