How to calculate the design fee of villa courtyard?

The design fee of villa courtyard is generally calculated in square meters, which is basically 500 yuan per square meter. The following is the quotation of its basic design engineering cost:

1. Installation fee of threshold marble: 3 pieces per 40 yuan, totaling 120 yuan;

2. Installation fee of window sill marble: 2 yuan and 4 yuan per square meter of 60 yuan. 42 square meters. 260 yuan;

3. Marble procurement: 1300 yuan; 4. Paint packaging material for hydropower pipeline trough: 400 yuan;

5. Wall construction and contracting materials: per square meter 120 yuan, 5 square meters, calculated by 600 yuan;

6. Water pipes: 120 yuan, each with 4 pipes, counted as 480 yuan;

7. Folding wall: 5.6 square meters per square meter of 25 yuan, that is, 140 yuan.