Take an object, for example a brick.Cut it in half,then take half and cut that in half,then cut half of it in half again, then halve half of it again, then again, then again.
each time it will get smaller and smaller with each cut.until it gets microscopic, continue cutting in half until it gets smaller than an atom.
In theory you should be able to keep cutting a half in half for ever,no matter how minute it gets it still exists,while it exists it can be cut in half, infinately??