Depending on how you have set up your browser to download files, it could be downloaded to different locations.
In google chrome, look up in the upper right-hand corner for three vertical dots and click on it:
It should look like this:
In the drop-down menu, click on downloads.
The file should be located in this location.
In Internet Explorer, look up in the upper right-hand corner for the gear icon and click on it:
It should look like this:
The "View downloads" window should appear and your downloaded item should appear in the list.
In Mozilla FireFox, look up in the upper right-hand corner for the bookshelf icon and click on it:
It looks like this: