A rectangular storage container has a volume of 360 cubic feet (ft${}^3$). The height of the container is 5 feet (ft), and the length of its rectangular base is 12 feet (ft). What is the width, in feet, of the container? (The volume of a rectangular prism is equal to $lwh$, where $l$ is the length, $w$ is the width, and $h$ is the height.)