The plus sign in 2 + 2 is placed as an infix operator in arithmetic.

Janet Bird née Ollerenshaw was pushing her pram along Tockley High Street.

… the more expensive and creamier Jersey or South Devon milk, for example, is kept apart from Friesian milk, with its low butter content.

There are continually springing up, however, advocates of new systems of musicography the adoption of which would reduce all our musical heir-looms to the level of waste paper, and most existing musical science and skill to the level of those of these advocates; for it is remarkable that no scheme for the reformation of musicography has ever been proposed by any person of acknowledged musical science or skill.