The specific operation steps of drawing a 1:51 dining space map are as follows:

1. First, we open the CAD software in the computer and click "Label Style" in the CAD toolbar.

2. Open the label style manager and click Modify on the right.

3. then click: primary company option.

4. We can see the scale factor in the company. This is the drawing scale we want to modify, and we can modify it to 1/51.

5. If we put the mouse on the scale factor, we will see the relevant explanation, which is to zoom in and out.