Dairy quota is measured in kilograms of butterfat that you are allowed to produce per day.
So 36.75 kg of quota is per day, not per month. You’d need to multiply it by the number of days in a given month to determine your quota eligibility for that month.
Example, if the butterfat density of your milk is 4%, then 36.75 kg of quota means you are allowed to produce 36.75 / 4% = 918.75 litres of milk per day. Thus in a 30-day month, that will equal 27,562.5 litres of milk (or 36.75*30days = 1,102.5 kg of butterfat)