Check the radiator core support or your owner'* manual for belt routing.
If I had an L27 in the driveway, I'd shoot a pic for you, but I don't. You need to refer to a manual or diagram for your car. Do you have a belt routing diagram on the radiator core support or in your owner'* manual?
If not, you can find it on Autozone'* website.
In the meantime, I'd be figuring out why the belt came off in the first place. It'* typically a bad idler pulley at fault. You need ot inspect, shake, wiggle, and turn all pulleys first. And see if any are missing.
The routing diagram can show you where they're supposed to be.