Custom Plywood Desk with Height Adjustable Legs

Top: Natural Plywood
Thickness (mm): 18
Width (mm): 800
Depth (mm): 550
Adjustable Round Legs: Height Adjustable Desk/Table Legs
Leg Range (mm): 710
Shape: Round Holes
Diameter (mm): 54
Positions: Centre
Number of Cable Trays: 1
Cable Tray Size (mm): 410
Cable Tray Colour: Silver
Add Notes: I would like to know what the total width of the desk at the base. I assume the 800mm width I have selected is the width of the worktop, but what the width at the point where the legs meet the floor. I only have 750mm space at the bottom.