Unit price refers to the price of each unit project, which is calculated by dividing the total price by the quantity. This formula can help us determine the price of each unit project. Deformation formulas include total price = unit price, quantity and quantity = total price/unit price. Total price = unit price quantity means that the total price is equal to the price of each unit project multiplied by the quantity, which can be used to calculate the total price. And quantity = total price/unit price means that quantity is equal to total price divided by the price of each unit project, which can be used to calculate quantity. These formulas are derived from mathematical principles and logic, which can ensure the accuracy of calculation results.