profit refers to the amount of operating income-cost-expense
There are two kinds of costs: front room and back kitchen, kitchen raw material cost and front room cost.
kitchen cost refers to stall cost, and front office refers to the cost of tobacco, alcohol and beverages.
The expenses are divided into fixed and variable costs (some analysis will include comprehensive costs, that is, there will be no growth or negative growth after the expenses rise to a certain extent)
Fixed costs include rent, labor costs and welfare. Changes include water, electricity and fuel consumables, taxes, marketing expenses, management expenses and so on.