How much money can a Bijie taxi earn per month?

Taxi fares are not priced by code. Generally, the starting price is 5 yuan. The closer ones are 5 yuan each time (1 to 3 people), and the further ones are 10 yuan, 15 yuan, etc.

On average, the total income should be 4,000~5,000, but after excluding various expenses, it should be more than 3,500 at least

This is what I summarized after asking them when I usually take the bus