Excel Logic based question - Anyone can help with this formula in Excel? all I know it should be a Nested if formula

Olive Oil Logic 2 Cost/gallon for the first 500 gallons: $23 Cost/gallon for the next 500 gallons 20 Cost/gallon for gallons>1,000: Logic Used for the Olive Oil Problem in the Proficiency Exercises $15 Number of gallons: 1,600 483 2001 Check: should be 30,500 should be 11,109 should be 36,515 Formulas to calculate the cost of: 1600 gallons: 483 gallons 2001 gallons