Calculate Order Total Cost with Incremental Shipping Rates

An order has multiple products, each with different quantities and price brackets. Calculate the total price by determining which quantity range each product falls into, where maxQuantity = null indicates no upper limit. Input: An order object including product name, a list of price brackets (with maxQuantity), and quantity. Output: The total price calculated based on the quantities and price brackets. Example: Input: Order = [{"name": "mouse", "price": [{"maxQuantity": 10, "unitPrice": 500}, {"maxQuantity": null, "unitPrice": 400}], "quantity": 15}] Output: 6800 Example Input {"order": [{"name": "keyboard", "price": [{"maxQuantity": 5, "unitPrice": 200}, {"maxQuantity": null, "unitPrice": 150}], "quantity": 7}]}