Return multiple values in Django Class-based View

I am working on a project for a Django course I am taking but currently struggling a bit with views.

In the project I created a View using ListView to display a list of products in my template. By using query_set I am able to get all the objects and return them to display all the products and their attributes in the template by using a for loop.

In the same query_set, I tried returning another variable that contains the total items in stock to display this data in the template as well, however, as soon as I add this variable to the return the template no longer receives the returned values.

This is the code I tried to return both values:

class ShopListing(ListView):    template_name = "webshop/shop_listing.html"    context_object_name = 'shop_listing'    def get_queryset(self):        #Get all products        products = Product.objects.all()        total_stock = products.aggregate(sum=Sum('stock'))['sum']        return products, total_stock

In my template I added the value 'total_stock' as shown below but I get nothing, and even the values from 'products' stop working:

<p><strong>{{total_stock}}</strong> items are currently available</p>

If I remove 'total_stock' from the return everything goes back to normal.

If I print "total_stock" I can see the right value in the logs, but this cannot be used in my template so I wonder what is the right way to do this.

Will appreciate any guidance.