# Preparations
# ensure that PHP version 7.x is used
# ensure that `Measures System` US/UK is selected (it is default for clean install)
# Test
# login to the adn.console
# go to the {nav Website & Content > Products} section
# press `New Product` button the Products grid's toolbar, choose `Tangible`
# enter values for all required fields (Title, SKU)
# enter weight 1 in the pounds field, left ounces field empty
# press `Save` button in the `Adding Product...` form's toolbar
# confirm, that product is created and it's weight is 1 pound and 0 ounces
# press `New Product` button the Products grid's toolbar, choose `Tangible`
# enter values for all required fields (Title, SKU)
# enter weight 1 in the ounces field, left pounds field empty
# press `Save` button in the `Adding Product...` form's toolbar
# confirm, that product is created and it's weight is 0 pounds and 1 ounce
# go to the {nav Logs & Reports > System Log} section
# confirm, that no “A non-numeric value encountered” warning records in the System Log created while testing