On the page Stock you can see the input field that you can search for the product.
By entering the item number or barcode and clicking the search button, the product will be displayed with the image and name of the product on top, and below the search button is the list of storage locations where the stock is stored.
The stock amount is displayed on the right
Clicking on the storage from the list you can see on details of the storageplace and the Quantity.