The inventory menu you can view the smallest unit of a large stock unit.
Jogger pants has 2 variant (Pcs and Lusin), 1 Lusin contains 12 Pcs. In the UOM column will be visible for 1 Lusin @12(containing 12 Pcs) and total Pcs. So that the Quantity*Content column will add up the total items in a Pcs.
This is step to show unit total quantity in column UOM :
Step 1. Multi-UOM Merging And Splitting The Products on Inventory Stock
To create a product with multi-UOM can follow this link
Step 2. Setting Variant Info
Go to Product Menu and Click the variant large unit product.