Selected financial data for The Portland Porcelain Works Coffee Mug Division is as follows: 
What is The Portland Porcelain Works Coffee Mug Division return on investment?
Definitions:
Total Variable Costs
The sum of all costs that vary directly with the level of production or service provision, such as materials and labor.
Total Sales Revenue
The total amount of income generated by the sale of goods or services before any costs or expenses are deducted.
Cost Object
A cost object is any item for which a separate measurement of costs is desired, including products, services, projects, or activities.
Denominator Volume
The quantity or capacity used as the denominator in allocating fixed costs to different units, often affecting the cost per unit calculation.
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