Go to the "Unit of Measurement" and "Unit Quantity"
fields. Specify the unit of goods (grams, meters, etc.) and the value of the single product unit.
Unit quantity is the minimum amount of product in the specified units, which is used to calculate the quantity of the product in the shopping cart. For example, you can sell the product in portions of 300 grams and the total weight of the product will be calculated based on the number of selected portions. In this case, you need to specify "300" under Unit Quantity and "grams" under Unit of Measurement.