Error on new Rect function in c# scripts =(

Hello.

On next line in my class error is occupated:

GUI.Label ( new Rect( (Screen.width - (Screen.height * 2)) * 0.75, 0, Screen.height * 2,Screen.height), "", backgroundStyle);

Error is:
Assets/GUI/Scripts/mainmenu_gui.cs(64,29): error CS1502: The best overloaded method match for UnityEngine.Rect.Rect(float, float, float, float)' has some invalid arguments Assets/GUI/Scripts/mainmenu_gui.cs(64,29): error CS1503: Argument 1: Cannot convert type double’ to `float’

Change “0.75” to “0.75f”.

Thanks.